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- /* ------------------------------------------------------------ */
- /*
- HTTrack Website Copier, Offline Browser for Windows and Unix
- Copyright (C) Xavier Roche and other contributors
-
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License
- as published by the Free Software Foundation; either version 2
- of the License, or any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- Please visit our Website: http://www.httrack.com
- */
-
- /* ------------------------------------------------------------ */
- /* File: ProxyTrack, httrack cache-based proxy */
- /* Author: Xavier Roche */
- /* ------------------------------------------------------------ */
-
-
- /*
-
- /\/\/\/\/\/\/\/\/\/\/\/\/\ PENDING WORK /\/\/\/\/\/\/\/\/\/\/\/\/\
- - Etag update handling
- - Other cache archive handling (.arc)
- - Live plug/unplug of archives
- - Listing
- \/\/\/\/\/\/\/\/\/\/\/\/\/ PENDING WORK \/\/\/\/\/\/\/\/\/\/\/\/\/
-
- */
-
- /*
- Architecture rough draft
- Xavier Roche 2005
-
- Aim: Building a sub-proxy to be linked with other top level proxies (such as Squid)
- Basic design: Classical HTTP/1.0 proxy server, with ICP server support
- Internal data design: HTTrack cache indexing in fast hashtables, with 'pluggable' design (add/removal of caches on-the-fly)
-
-
- Index structure organization:
- -----------------------------
-
- foo/hts-cache/new.zip -----> Index[0] \
- bar/hts-cache/new.zip -----> Index[1] > Central Index Lookup (CIL)
- baz/hts-cache/new.zip -----> Index[2] /
- .. -----> ..
-
- Indexes are hashtables with URL (STRING) -> INTEGER lookup.
-
- URL -----> CIL Ask for index ID
- URL -----> Index[ID] Ask for index properties (ZIP cache index)
-
-
- Lookup of an entry:
- -------------------
-
- ID = CIL[URL]
- If ID is valid Then
- return SUCCESS
- Else
- return FAILURE
- EndIf
-
-
- Fetching of an entry:
- ---------------------
-
- RESOURCE = null
- ID = CIL[URL]
- If ID is valid Then
- OFFSET = Index[ID][URL]
- If OFFSET is valid Then
- RESOURCE = Fetch(ID, OFFSET)
- EndIf
- EndIf
-
-
- Removal of index N:
- -------------------
-
- For all entries in Index[N]
- URL(key) -----> Lookup all other caches
- Found: Replace in CIL
- Not Found: Delete entry in CIL
- Done
- Delete Index[N]
-
-
- Adding of index N:
- ------------------
-
- Build Index[N]
- For all entries in Index[N]
- URL(key) -----> Lookup in CIL
- Found: Do nothing if corresponding Cache is newer than this one
- Not Found: Add/Replace entry in CIL
- Done
-
- Remark: If no cache newer than the added one is found, all entries can be added without any lookup (optim)
-
- */
-
- /* HTTrack definitions */
- #include "htsbase.h"
- #include "htsnet.h"
- #include "htslib.h"
- #include "htsglobal.h"
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <time.h>
- #include <fcntl.h>
- #ifdef _WIN32
- #else
- #include <arpa/inet.h>
- #endif
- /* END specific definitions */
-
- /* String */
- #include "proxystrings.h"
-
- /* Network base */
- #include "htsbasenet.h"
-
- /* dΘfinitions globales */
- #include "htsglobal.h"
-
- /* htsweb */
- #include "htsinthash.h"
-
- /* ProxyTrack */
- #include "proxytrack.h"
-
- /* Store manager */
- #include "../minizip/mztools.h"
- #include "store.h"
-
- /* threads */
- #ifdef _WIN32
- #include <process.h> /* _beginthread, _endthread */
- #else
- #include <pthread.h>
- #endif
-
- /* External references */
- // htsErrorCallback htsCallbackErr = NULL;
- int htsMemoryFastXfr = 1; /* fast xfr by default */
- void abortLog__fnc(char* msg, char* file, int line);
- void abortLog__fnc(char* msg, char* file, int line) {
- FILE* fp = fopen("CRASH.TXT", "wb");
- if (!fp) fp = fopen("/tmp/CRASH.TXT", "wb");
- if (!fp) fp = fopen("C:\\CRASH.TXT", "wb");
- if (!fp) fp = fopen("CRASH.TXT", "wb");
- if (fp) {
- fprintf(fp, "HTTrack " HTTRACK_VERSIONID " closed at '%s', line %d\r\n", file, line);
- fprintf(fp, "Reason:\r\n%s\r\n", msg);
- fflush(fp);
- fclose(fp);
- }
- }
- // HTSEXT_API t_abortLog abortLog__ = abortLog__fnc; /* avoid VC++ inlining */
- #define webhttrack_lock(A) do{}while(0)
-
- /* Static definitions */
-
- static int linputsoc(T_SOC soc, char* s, int max) {
- int c;
- int j=0;
- do {
- unsigned char ch;
- if (recv(soc, &ch, 1, 0) == 1) {
- c = ch;
- } else {
- c = EOF;
- }
- if (c!=EOF) {
- switch(c) {
- case 13: break; // sauter CR
- case 10: c=-1; break;
- case 9: case 12: break; // sauter ces caractΦres
- default: s[j++]=(char) c; break;
- }
- }
- } while((c!=-1) && (c!=EOF) && (j<(max-1)));
- s[j]='\0';
- return j;
- }
-
- static int check_readinput_t(T_SOC soc, int timeout) {
- if (soc != INVALID_SOCKET) {
- fd_set fds; // poll structures
- struct timeval tv; // structure for select
- FD_ZERO(&fds);
- FD_SET(soc,&fds);
- tv.tv_sec=timeout;
- tv.tv_usec=0;
- select((int)(soc + 1),&fds,NULL,NULL,&tv);
- if (FD_ISSET(soc,&fds))
- return 1;
- else
- return 0;
- } else
- return 0;
- }
-
- static int linputsoc_t(T_SOC soc, char* s, int max, int timeout) {
- if (check_readinput_t(soc, timeout)) {
- return linputsoc(soc, s, max);
- }
- return -1;
- }
-
- static int gethost(const char* hostname, SOCaddr *server, size_t server_size) {
- if (hostname != NULL && *hostname != '\0') {
- #if HTS_INET6==0
- /*
- ipV4 resolver
- */
- t_hostent* hp=gethostbyname(hostname);
- if (hp!=NULL) {
- if (hp->h_length) {
- SOCaddr_copyaddr(*server, server_size, hp->h_addr_list[0], hp->h_length);
- return 1;
- }
- }
- #else
- /*
- ipV6 resolver
- */
- struct addrinfo* res = NULL;
- struct addrinfo hints;
- memset(&hints, 0, sizeof(hints));
- #if 0
- if (IPV6_resolver == 1) // V4 only (for bogus V6 entries)
- hints.ai_family = PF_INET;
- else if (IPV6_resolver == 2) // V6 only (for testing V6 only)
- hints.ai_family = PF_INET6;
- else
- #endif
- hints.ai_family = PF_UNSPEC;
- hints.ai_socktype = SOCK_STREAM;
- hints.ai_protocol = IPPROTO_TCP;
- if (getaddrinfo(hostname, NULL, &hints, &res) == 0) {
- if (res) {
- if ( (res->ai_addr) && (res->ai_addrlen) ) {
- SOCaddr_copyaddr(*server, server_size, res->ai_addr, res->ai_addrlen);
- freeaddrinfo(res);
- return 1;
- }
- }
- }
- if (res) {
- freeaddrinfo(res);
- }
-
- #endif
- }
- return 0;
- }
-
- static String getip(SOCaddr *server, int serverLen) {
- String s = STRING_EMPTY;
- #if HTS_INET6==0
- unsigned int sizeMax = sizeof("999.999.999.999:65535");
- #else
- unsigned int sizeMax = sizeof("ffff:ffff:ffff:ffff:ffff:ffff:ffff:65535");
- #endif
- char * dotted = malloc(sizeMax + 1);
- unsigned short port = ntohs(SOCaddr_sinport(*server));
- if (dotted == NULL) {
- CRITICAL("memory exhausted");
- return s;
- }
- SOCaddr_inetntoa(dotted, sizeMax, *server, serverLen);
- sprintf(dotted + strlen(dotted), ":%d", port);
- StringAttach(&s, &dotted);
- return s;
- }
-
-
- static T_SOC smallserver_init(const char* adr, int port, int family) {
- SOCaddr server;
- size_t server_size = sizeof(server);
-
- memset(&server, 0, sizeof(server));
- SOCaddr_initany(server, server_size);
- if (gethost(adr, &server, server_size)) { // host name
- T_SOC soc = INVALID_SOCKET;
- if ( (soc = (T_SOC) socket(SOCaddr_sinfamily(server), family, 0)) != INVALID_SOCKET) {
- SOCaddr_initport(server, port);
- if ( bind(soc,(struct sockaddr*) &server, (int)server_size) == 0 ) {
- if (family != SOCK_STREAM
- || listen(soc, 10) >=0 ) {
- return soc;
- } else {
- #ifdef _WIN32
- closesocket(soc);
- #else
- close(soc);
- #endif
- soc=INVALID_SOCKET;
- }
- } else {
- #ifdef _WIN32
- closesocket(soc);
- #else
- close(soc);
- #endif
- soc=INVALID_SOCKET;
- }
- }
- }
- return INVALID_SOCKET;
- }
-
- static int proxytrack_start(PT_Indexes indexes, T_SOC soc, T_SOC socICP);
- int proxytrack_main(char* proxyAddr, int proxyPort,
- char* icpAddr, int icpPort,
- PT_Indexes index) {
- int returncode = 0;
- T_SOC soc = smallserver_init(proxyAddr, proxyPort, SOCK_STREAM);
- T_SOC socICP = smallserver_init(proxyAddr, icpPort, SOCK_DGRAM);
- if (soc != INVALID_SOCKET
- && socICP != INVALID_SOCKET)
- {
- char url[HTS_URLMAXSIZE*2];
- char method[32];
- char data[32768];
- url[0]=method[0]=data[0]='\0';
- //
- printf("HTTP Proxy installed on %s:%d/\n", proxyAddr, proxyPort);
- printf("ICP Proxy installed on %s:%d/\n", icpAddr, icpPort);
- #ifndef _WIN32
- {
- pid_t pid = getpid();
- printf("PID=%d\n", (int)pid);
- }
- #endif
- fflush(stdout);
- fflush(stderr);
- //
- if (!proxytrack_start(index, soc, socICP)) {
- int last_errno = errno;
- fprintf(stderr, "Unable to create the server: %s\n", strerror(last_errno));
- #ifdef _WIN32
- closesocket(soc);
- #else
- close(soc);
- #endif
- printf("Done\n");
- returncode = 1;
- } else {
- returncode = 0;
- }
- } else {
- int last_errno = errno;
- fprintf(stderr, "Unable to initialize a temporary server : %s\n", strerror(last_errno));
- returncode = 1;
- }
- printf("EXITED\n");
- fflush(stdout);
- fflush(stderr);
- return returncode;
- }
-
- static const char* GetHttpMessage(int statuscode) {
- // Erreurs HTTP, selon RFC
- switch( statuscode) {
- case 100: return "Continue"; break;
- case 101: return "Switching Protocols"; break;
- case 200: return "OK"; break;
- case 201: return "Created"; break;
- case 202: return "Accepted"; break;
- case 203: return "Non-Authoritative Information"; break;
- case 204: return "No Content"; break;
- case 205: return "Reset Content"; break;
- case 206: return "Partial Content"; break;
- case 207: return "Multi-Status"; break;
- case 300: return "Multiple Choices"; break;
- case 301: return "Moved Permanently"; break;
- case 302: return "Moved Temporarily"; break;
- case 303: return "See Other"; break;
- case 304: return "Not Modified"; break;
- case 305: return "Use Proxy"; break;
- case 306: return "Undefined 306 error"; break;
- case 307: return "Temporary Redirect"; break;
- case 400: return "Bad Request"; break;
- case 401: return "Unauthorized"; break;
- case 402: return "Payment Required"; break;
- case 403: return "Forbidden"; break;
- case 404: return "Not Found"; break;
- case 405: return "Method Not Allowed"; break;
- case 406: return "Not Acceptable"; break;
- case 407: return "Proxy Authentication Required"; break;
- case 408: return "Request Time-out"; break;
- case 409: return "Conflict"; break;
- case 410: return "Gone"; break;
- case 411: return "Length Required"; break;
- case 412: return "Precondition Failed"; break;
- case 413: return "Request Entity Too Large"; break;
- case 414: return "Request-URI Too Large"; break;
- case 415: return "Unsupported Media Type"; break;
- case 416: return "Requested Range Not Satisfiable"; break;
- case 417: return "Expectation Failed"; break;
- case 500: return "Internal Server Error"; break;
- case 501: return "Not Implemented"; break;
- case 502: return "Bad Gateway"; break;
- case 503: return "Service Unavailable"; break;
- case 504: return "Gateway Time-out"; break;
- case 505: return "HTTP Version Not Supported"; break;
- default: return "Unknown HTTP Error"; break;
- }
- }
-
- #ifndef NO_WEBDAV
- static void proxytrack_add_DAV_Item(String *item, String *buff,
- const char* filename,
- size_t size,
- time_t timestamp,
- const char* mime,
- int isDir,
- int isRoot,
- int isDefault)
- {
- struct tm * timetm;
- if (timestamp == (time_t) 0 || timestamp == (time_t) -1) {
- timestamp = time(NULL);
- }
- if ((timetm = gmtime(×tamp)) != NULL) {
- char tms[256 + 1];
- const char * name;
- strftime(tms, 256, "%a, %d %b %Y %H:%M:%S GMT", timetm); /* Sun, 18 Sep 2005 11:45:45 GMT */
-
- if (mime == NULL || *mime == 0)
- mime = "application/octet-stream";
-
- StringLength(*buff) = 0;
- escapexml(filename, buff);
-
- name = strrchr(StringBuff(*buff), '/');
- if (name != NULL)
- name++;
- if (name == NULL || *name == 0) {
- if (strcmp(mime, "text/html") == 0)
- name = "Default Document for the Folder.html";
- else
- name = "Default Document for the Folder";
- }
-
- StringRoom(*item, 1024);
- sprintf(StringBuffRW(*item),
- "<response xmlns=\"DAV:\">\r\n"
- "<href>/webdav%s%s</href>\r\n"
- "<propstat>\r\n"
- "<prop>\r\n"
- "<displayname>%s</displayname>\r\n"
- "<iscollection>%d</iscollection>\r\n"
- "<haschildren>%d</haschildren>\r\n"
- "<isfolder>%d</isfolder>\r\n"
- "<resourcetype>%s</resourcetype>\r\n"
- "<creationdate>%d-%02d-%02dT%02d:%02d:%02dZ</creationdate>\r\n"
- "<getlastmodified>%s</getlastmodified>\r\n"
- "<supportedlock></supportedlock>\r\n"
- "<lockdiscovery/>\r\n"
- "<getcontenttype>%s</getcontenttype>\r\n"
- "<getcontentlength>%d</getcontentlength>\r\n"
- "<isroot>%d</isroot>\r\n"
- "</prop>\r\n"
- "<status>HTTP/1.1 200 OK</status>\r\n"
- "</propstat>\r\n"
- "</response>\r\n",
- /* */
- ( StringBuff(*buff)[0] == '/' ) ? "" : "/", StringBuff(*buff),
- name,
- isDir ? 1 : 0,
- isDir ? 1 : 0,
- isDir ? 1 : 0,
- isDir ? "<collection/>" : "",
- timetm->tm_year + 1900, timetm->tm_mon + 1, timetm->tm_mday, timetm->tm_hour, timetm->tm_min, timetm->tm_sec,
- tms,
- isDir ? "httpd/unix-directory" : mime,
- (int)size,
- isRoot ? 1 : 0
- );
- StringLength(*item) = (int) strlen(StringBuff(*item));
- }
- }
-
- /* Convert a RFC822 time to time_t */
- time_t get_time_rfc822(const char* s) {
- struct tm result;
- /* */
- char months[]="jan feb mar apr may jun jul aug sep oct nov dec";
- char str[256];
- char* a;
- int i;
- /* */
- int result_mm=-1;
- int result_dd=-1;
- int result_n1=-1;
- int result_n2=-1;
- int result_n3=-1;
- int result_n4=-1;
- /* */
-
- if ((int) strlen(s) > 200)
- return (time_t)0;
- for(i = 0 ; s[i] != 0 ; i++) {
- if (s[i] >= 'A' && s[i] <= 'Z')
- str[i] = s[i] + ('a' - 'A');
- else
- str[i] = s[i];
- }
- str[i] = 0;
- /* Θliminer :,- */
- while( (a=strchr(str,'-')) ) *a=' ';
- while( (a=strchr(str,':')) ) *a=' ';
- while( (a=strchr(str,',')) ) *a=' ';
- /* tokeniser */
- a=str;
- while(*a) {
- char *first,*last;
- char tok[256];
- /* dΘcouper mot */
- while(*a==' ') a++; /* sauter espaces */
- first=a;
- while((*a) && (*a!=' ')) a++;
- last=a;
- tok[0]='\0';
- if (first!=last) {
- char* pos;
- strncat(tok,first,(int) (last - first));
- /* analyser */
- if ( (pos=strstr(months,tok)) ) { /* month always in letters */
- result_mm=((int) (pos - months))/4;
- } else {
- int number;
- if (sscanf(tok,"%d",&number) == 1) { /* number token */
- if (result_dd<0) /* day always first number */
- result_dd=number;
- else if (result_n1<0)
- result_n1=number;
- else if (result_n2<0)
- result_n2=number;
- else if (result_n3<0)
- result_n3=number;
- else if (result_n4<0)
- result_n4=number;
- } /* sinon, bruit de fond(+1GMT for exampel) */
- }
- }
- }
- if ((result_n1>=0) && (result_mm>=0) && (result_dd>=0) && (result_n2>=0) && (result_n3>=0) && (result_n4>=0)) {
- if (result_n4>=1000) { /* Sun Nov 6 08:49:37 1994 */
- result.tm_year=result_n4-1900;
- result.tm_hour=result_n1;
- result.tm_min=result_n2;
- result.tm_sec=max(result_n3,0);
- } else { /* Sun, 06 Nov 1994 08:49:37 GMT or Sunday, 06-Nov-94 08:49:37 GMT */
- result.tm_hour=result_n2;
- result.tm_min=result_n3;
- result.tm_sec=max(result_n4,0);
- if (result_n1<=50) /* 00 means 2000 */
- result.tm_year=result_n1+100;
- else if (result_n1<1000) /* 99 means 1999 */
- result.tm_year=result_n1;
- else /* 2000 */
- result.tm_year=result_n1-1900;
- }
- result.tm_isdst=0; /* assume GMT */
- result.tm_yday=-1; /* don't know */
- result.tm_wday=-1; /* don't know */
- result.tm_mon=result_mm;
- result.tm_mday=result_dd;
- return mktime(&result);
- }
- return (time_t) 0;
- }
-
- static PT_Element proxytrack_process_DAV_Request(PT_Indexes indexes, const char * urlFull, int depth) {
- const char * file = jump_protocol_and_auth(urlFull);
- if ( (file = strchr(file, '/')) == NULL)
- return NULL;
-
- if (strncmp(file, "/webdav", 7) != 0) {
- PT_Element elt = PT_ElementNew();
- elt->statuscode = 405;
- strcpy(elt->msg, "Method Not Allowed");
- return elt;
- }
-
- /* Skip /webdav */
- file += 7;
-
- /* */
- {
- PT_Element elt = PT_ElementNew();
- int i, isDir;
- String url = STRING_EMPTY;
- String response = STRING_EMPTY;
- String item = STRING_EMPTY;
- String itemUrl = STRING_EMPTY;
- String buff = STRING_EMPTY;
- StringClear(response);
- StringClear(item);
- StringClear(itemUrl);
- StringClear(buff);
-
- /* Canonize URL */
- StringCopy(url, file + ((file[0] == '/') ? 1 : 0));
- if (StringLength(url) > 0) {
- if (StringBuff(url)[StringLength(url) - 1] == '/') {
- StringBuffRW(url)[StringLength(url) - 1] = '\0';
- StringLength(url)--;
- }
- }
-
- /* Form response */
- StringRoom(response, 1024);
- sprintf(StringBuffRW(response),
- "<?xml version=\"1.0\" encoding=\"utf-8\"?>\r\n"
- "<multistatus xmlns=\"DAV:\">\r\n");
- StringLength(response) = (int) strlen(StringBuff(response));
- /* */
-
- /* Root */
- StringLength(item) = 0;
- proxytrack_add_DAV_Item(&item, &buff,
- StringBuff(url), /*size*/0, /*timestamp*/(time_t) 0, /*mime*/NULL, /*isDir*/1, /*isRoot*/1, /*isDefault*/0);
- StringMemcat(response, StringBuff(item), StringLength(item));
-
- /* Childrens (Depth > 0) */
- if (depth > 0) {
- time_t timestampRep = (time_t) -1;
- const char * prefix = StringBuff(url);
- unsigned int prefixLen = (unsigned int) strlen(prefix);
- char ** list = PT_Enumerate(indexes, prefix, 0);
- if (list != NULL) {
- for(isDir = 1 ; isDir >= 0 ; isDir--) {
- for(i = 0 ; list[i] != NULL ; i++) {
- const char * thisUrl = list[i];
- const char * mimeType = "application/octet-stream";
- unsigned int thisUrlLen = (unsigned int) strlen(thisUrl);
- int thisIsDir = (thisUrl[thisUrlLen - 1] == '/') ? 1 : 0;
-
- /* Item URL */
- StringRoom(itemUrl, thisUrlLen + prefixLen + sizeof("/webdav/") + 1);
- StringClear(itemUrl);
- sprintf(StringBuffRW(itemUrl), "/%s/%s", prefix, thisUrl);
- if (!thisIsDir)
- StringLength(itemUrl) = (int) strlen(StringBuff(itemUrl));
- else
- StringLength(itemUrl) = (int) strlen(StringBuff(itemUrl)) - 1;
- StringBuffRW(itemUrl)[StringLength(itemUrl)] = '\0';
-
- if (thisIsDir == isDir) {
- size_t size = 0;
- time_t timestamp = (time_t) 0;
- PT_Element file = NULL;
-
- /* Item stats */
- if (!isDir) {
- file = PT_ReadIndex(indexes, StringBuff(itemUrl) + 1, FETCH_HEADERS);
- if (file != NULL && file->statuscode == HTTP_OK ) {
- size = file->size;
- if (file->lastmodified) {
- timestamp = get_time_rfc822(file->lastmodified);
- }
- if (timestamp == (time_t) 0) {
- if (timestampRep == (time_t) -1) {
- timestampRep = 0;
- if (file->indexId != -1) {
- timestampRep = PT_Index_Timestamp(PT_GetIndex(indexes, file->indexId));
- }
- }
- timestamp = timestampRep;
- }
- if (file->contenttype) {
- mimeType = file->contenttype;
- }
- }
- }
-
- /* Add item */
- StringLength(item) = 0;
- proxytrack_add_DAV_Item(&item, &buff,
- StringBuff(itemUrl), size, timestamp, mimeType, isDir, /*isRoot*/0, /*isDefault*/(thisUrlLen == 0));
- StringMemcat(response, StringBuff(item), StringLength(item));
-
- /* Wipe element */
- if (file != NULL)
- PT_Element_Delete(&file);
- }
- }
- }
- PT_Enumerate_Delete(&list);
- } /* items != NULL */
- } /* Depth > 0 */
-
- /* End of responses */
- StringCat(response,
- "</multistatus>\r\n"
- );
-
- StringFree(item);
- StringFree(itemUrl);
- StringFree(url);
- StringFree(buff);
-
- elt->size = StringLength(response);
- elt->adr = StringAcquire(&response);
- elt->statuscode = 207; /* Multi-Status */
- strcpy(elt->charset, "utf-8");
- strcpy(elt->contenttype, "text/xml");
- strcpy(elt->msg, "Multi-Status");
- StringFree(response);
-
- fprintf(stderr, "RESPONSE:\n%s\n", elt->adr);
-
- return elt;
- }
- return NULL;
- }
- #endif
-
- static PT_Element proxytrack_process_HTTP_List(PT_Indexes indexes, const char * url) {
- char ** list = PT_Enumerate(indexes, url, 0);
- if (list != NULL) {
- PT_Element elt = PT_ElementNew();
- int i, isDir;
- String html = STRING_EMPTY;
- StringClear(html);
- StringCat(html,
- "<html>"
- PROXYTRACK_COMMENT_HEADER
- DISABLE_IE_FRIENDLY_HTTP_ERROR_MESSAGES
- "<head>\r\n"
- "<title>ProxyTrack " PROXYTRACK_VERSION " Catalog</title>"
- "</head>\r\n"
- "<body>\r\n"
- "<h3>Directory index:</h3><br />"
- "<br />"
- "<hr>"
- "<tt>[DIR] <a href=\"..\">..</a></tt><br />"
- );
- for(isDir = 1 ; isDir >= 0 ; isDir--) {
- for(i = 0 ; list[i] != NULL ; i++) {
- char * thisUrl = list[i];
- unsigned int thisUrlLen = (unsigned int) strlen(thisUrl);
- int thisIsDir = (thisUrl[thisUrlLen - 1] == '/') ? 1 : 0;
- if (thisIsDir == isDir) {
- if (isDir)
- StringCat(html, "<tt>[DIR] ");
- else
- StringCat(html, "<tt> ");
- StringCat(html, "<a href=\"");
- if (isDir) {
- StringCat(html, "http://proxytrack/");
- }
- StringCat(html, url);
- StringCat(html, list[i]);
- StringCat(html, "\">");
- StringCat(html, list[i]);
- StringCat(html, "</a></tt><br />");
- }
- }
- }
- StringCat(html,
- "</body>"
- "</html>");
- PT_Enumerate_Delete(&list);
- elt->size = StringLength(html);
- elt->adr = StringAcquire(&html);
- elt->statuscode = HTTP_OK;
- strcpy(elt->charset, "iso-8859-1");
- strcpy(elt->contenttype, "text/html");
- strcpy(elt->msg, "OK");
- StringFree(html);
- return elt;
- }
- return NULL;
- }
-
- static void proxytrack_process_HTTP(PT_Indexes indexes, T_SOC soc_c) {
- int timeout=30;
- int retour=0;
- int willexit=0;
- int buffer_size = 32768;
- char * buffer = (char*)malloc(buffer_size);
- int line1Size = 1024;
- char * line1 = (char*)malloc(line1Size);
- int lineSize = 8192;
- char * line = (char*)malloc(lineSize);
- int length = 0;
- int keepAlive = 1;
-
- String url = STRING_EMPTY;
- String urlRedirect = STRING_EMPTY;
- String headers = STRING_EMPTY;
- String output = STRING_EMPTY;
- String host = STRING_EMPTY;
- String localhost = STRING_EMPTY;
- #ifndef NO_WEBDAV
- String davHeaders = STRING_EMPTY;
- String davRequest = STRING_EMPTY;
- #endif
-
- StringRoom(localhost, 256);
- if (gethostname(StringBuffRW(localhost), (int) StringCapacity(localhost) - 1) == 0) {
- StringLength(localhost) = (int) strlen(StringBuff(localhost));
- } else {
- StringCopy(localhost, "localhost");
- }
-
- #ifdef _DEBUG
- Sleep(1000);
- #endif
-
- if (buffer == NULL || line == NULL || line1 == NULL) {
- CRITICAL("proxytrack_process_HTTP:memory exhausted");
- #ifdef _WIN32
- closesocket(soc_c);
- #else
- close(soc_c);
- #endif
- return ;
- }
-
- do {
- const char* msgError = NULL;
- int msgCode = 0;
- PT_Element element = NULL;
- char* command;
- char* proto;
- char* surl;
- int directHit = 0;
- int headRequest = 0;
- int listRequest = 0;
- #ifndef NO_WEBDAV
- int davDepth = 0;
- #endif
-
- /* Clear context */
- line[0] = line1[0] = '\0';
- buffer[0] = '\0';
- command = line1;
- StringClear(url);
- StringClear(urlRedirect);
- StringClear(headers);
- StringClear(output);
- StringClear(host);
- #ifndef NO_WEBDAV
- StringClear(davHeaders);
- StringClear(davRequest);
- #endif
-
- /* line1: "GET http://www.example.com/ HTTP/1.0" */
- if (linputsoc_t(soc_c, line1, line1Size - 2, timeout) > 0
- && ( surl = strchr(line1, ' ') )
- && !(*surl = '\0')
- && ++surl
- && (proto = strchr(surl, ' ')) && !(*proto = '\0') && ++proto)
- {
- /* Flush headers */
- while(linputsoc_t(soc_c, line, lineSize - 2, timeout) > 0
- && line[0] != 0)
- {
- int p;
- if ((p = strfield(line, "Content-length:"))!=0) {
- if (sscanf(line+p, "%d", &length) != 1) {
- msgCode = 500;
- msgError = "Bad HTTP Content-Length Field";
- keepAlive = 0;
- length = 0;
- }
- } else if (strcasecmp(line, "Connection: close") == 0) {
- keepAlive = 0;
- } else if (strcasecmp(line, "Connection: keep-alive") == 0) {
- keepAlive = 1;
- } else if ((p = strfield(line, "Host:"))) {
- char* chost = line + p;
- if (*chost == ' ')
- chost++;
- StringCopy(host, chost);
- }
- #ifndef NO_WEBDAV
- else if ((p = strfield(line, "Depth: "))) {
- char* depth = line + p;
- if (sscanf(depth, "%d", &davDepth) != 1) {
- davDepth = 0;
- }
- }
- #endif
- }
-
- /* Flush body */
- #ifndef NO_WEBDAV
- if (length > 0) {
- if (length < 32768) {
- StringRoom(davRequest, length + 1);
- if (recv(soc_c, StringBuffRW(davRequest), length, 0) == length) {
- StringBuffRW(davRequest)[length] = 0;
- } else {
- msgCode = 500;
- msgError = "Posted Data Read Error";
- keepAlive = 0;
- }
- } else {
- msgCode = 500;
- msgError = "Posted Data Too Large";
- keepAlive = 0;
- }
- }
- #endif
-
- /* Switch protocol ID */
- if (strcasecmp(command, "post") == 0) {
- #ifndef NO_WEBDAV
- msgCode = 404;
- #else
- msgCode = 501;
- keepAlive = 0;
- #endif
- msgError = "Proxy Error (POST Request Forbidden)";
- }
- else if (strcasecmp(command, "get") == 0) {
- headRequest = 0;
- }
- else if (strcasecmp(command, "head") == 0) {
- headRequest = 1;
- }
- #ifndef NO_WEBDAV
- else if (strcasecmp(command, "options") == 0) {
- const char * options = "GET, HEAD, OPTIONS, POST, PROPFIND, TRACE"
- ", MKCOL, DELETE, PUT"; /* Not supported */
- msgCode = HTTP_OK;
- StringRoom(headers, 8192);
- sprintf(StringBuffRW(headers),
- "HTTP/1.1 %d %s\r\n"
- "DAV: 1, 2\r\n"
- "MS-Author-Via: DAV\r\n"
- "Cache-Control: private\r\n"
- "Allow: %s\r\n",
- msgCode, GetHttpMessage(msgCode), options);
- StringLength(headers) = (int) strlen(StringBuff(headers));
- }
- else if (strcasecmp(command, "propfind") == 0) {
- if (davDepth > 1) {
- msgCode = 403;
- msgError = "DAV Depth Limit Forbidden";
- } else {
- fprintf(stderr, "DEBUG: DAV-DATA=<%s>\n", StringBuff(davRequest));
- listRequest = 2; /* propfind */
- }
- }
- else if (strcasecmp(command, "mkcol") == 0
- || strcasecmp(command, "delete") == 0
- || strcasecmp(command, "put") == 0
- || strcasecmp(command, "proppatch") == 0
- || strcasecmp(command, "lock") == 0
- || strcasecmp(command, "unlock") == 0
- || strcasecmp(command, "copy") == 0
- || strcasecmp(command, "trace") == 0)
- {
- msgCode = 403;
- msgError = "Method Forbidden";
- }
- #endif
- else {
- msgCode = 501;
- msgError = "Proxy Error (Unsupported or Unknown HTTP Command Request)";
- keepAlive = 0;
- }
- if (strcasecmp(proto, "http/1.1") == 0) {
- keepAlive = 1;
- } else if (strcasecmp(proto, "http/1.0") == 0) {
- keepAlive = 0;
- } else {
- msgCode = 505;
- msgError = "Proxy Error (Unknown HTTP Version)";
- keepAlive = 0;
- }
-
- /* Post-process request */
- if (link_has_authority(surl)) {
- if (strncasecmp(surl, "http://proxytrack/", sizeof("http://proxytrack/") - 1) == 0) {
- directHit = 1; /* Another direct hit hack */
- }
- StringCopy(url, surl);
- } else {
- if (StringLength(host) > 0) {
- /* Direct hit */
- if (
- #ifndef NO_WEBDAV
- listRequest != 2
- &&
- #endif
- strncasecmp(StringBuff(host), StringBuff(localhost), StringLength(localhost)) == 0
- &&
- (StringBuff(host)[StringLength(localhost)] == '\0'
- || StringBuff(host)[StringLength(localhost)] == ':')
- && surl[0] == '/'
- )
- {
- const char * toHit = surl + 1;
- if (strncmp(toHit, "webdav/", 7) == 0) {
- toHit += 7;
- }
- /* Direct hit */
- directHit = 1;
- StringCopy(url, "");
- if (!link_has_authority(toHit))
- StringCat(url, "http://");
- StringCat(url, toHit);
- } else if (strncasecmp(surl, "/proxytrack/", sizeof("/proxytrack/") - 1) == 0) {
- const char * toHit = surl + sizeof("/proxytrack/") - 1;
- /* Direct hit */
- directHit = 1;
- StringCopy(url, "");
- if (!link_has_authority(toHit))
- StringCat(url, "http://");
- StringCat(url, toHit);
- } else {
- /* Transparent proxy */
- StringCopy(url, "http://");
- StringCat(url, StringBuff(host));
- StringCat(url, surl);
- }
- } else {
- msgCode = 500;
- msgError = "Transparent Proxy Error ('Host' HTTP Request Header Field Missing)";
- keepAlive = 0;
- }
- }
-
- /* Response */
- if (msgCode == 0) {
- if (listRequest == 1) {
- element = proxytrack_process_HTTP_List(indexes, StringBuff(url));
- }
- #ifndef NO_WEBDAV
- else if (listRequest == 2) {
- if ((element = proxytrack_process_DAV_Request(indexes, StringBuff(url), davDepth)) != NULL) {
- msgCode = element->statuscode;
- StringRoom(davHeaders, 1024);
- sprintf(StringBuffRW(davHeaders),
- "DAV: 1, 2\r\n"
- "MS-Author-Via: DAV\r\n"
- "Cache-Control: private\r\n");
- StringLength(davHeaders) = (int) strlen(StringBuff(davHeaders));
- }
- }
- #endif
- else {
- element = PT_ReadIndex(indexes, StringBuff(url), FETCH_BODY);
- }
- if (element == NULL
- #ifndef NO_WEBDAV
- && listRequest == 2
- #endif
- && StringLength(url) > 0
- && StringBuff(url)[StringLength(url) - 1] == '/'
- )
- {
- element = PT_Index_HTML_BuildRootInfo(indexes);
- if (element != NULL) {
- element->statuscode = 404; /* HTML page, but in error */
- }
- }
- if (element != NULL) {
- msgCode = element->statuscode;
- StringRoom(headers, 8192);
- sprintf(StringBuffRW(headers),
- "HTTP/1.1 %d %s\r\n"
- #ifndef NO_WEBDAV
- "%s"
- #endif
- "Content-Type: %s%s%s%s\r\n"
- "%s%s%s"
- "%s%s%s"
- "%s%s%s",
- /* */
- msgCode,
- element->msg,
- #ifndef NO_WEBDAV
- /* DAV */
- StringBuff(davHeaders),
- #endif
- /* Content-type: foo; [ charset=bar ] */
- element->contenttype,
- ( ( element->charset[0]) ? "; charset=\"" : ""),
- element->charset,
- ( ( element->charset[0]) ? "\"" : ""),
- /* location */
- ( ( element->location != NULL && element->location[0]) ? "Location: " : ""),
- ( ( element->location != NULL && element->location[0]) ? element->location : ""),
- ( ( element->location != NULL && element->location[0]) ? "\r\n" : ""),
- /* last-modified */
- ( ( element->lastmodified[0]) ? "Last-Modified: " : ""),
- ( ( element->lastmodified[0]) ? element->lastmodified : ""),
- ( ( element->lastmodified[0]) ? "\r\n" : ""),
- /* etag */
- ( ( element->etag[0]) ? "ETag: " : ""),
- ( ( element->etag[0]) ? element->etag : ""),
- ( ( element->etag[0]) ? "\r\n" : "")
- );
- StringLength(headers) = (int) strlen(StringBuff(headers));
- } else {
- /* No query string, no ending / : check the the <url>/ page */
- if (StringLength(url) > 0 && StringBuff(url)[StringLength(url) - 1] != '/' && strchr(StringBuff(url), '?') == NULL) {
- StringCopy(urlRedirect, StringBuff(url));
- StringCat(urlRedirect, "/");
- if (PT_LookupIndex(indexes, StringBuff(urlRedirect))) {
- msgCode = 301; /* Moved Permanently */
- StringRoom(headers, 8192);
- sprintf(StringBuffRW(headers),
- "HTTP/1.1 %d %s\r\n"
- "Content-Type: text/html\r\n"
- "Location: %s\r\n",
- /* */
- msgCode,
- GetHttpMessage(msgCode),
- StringBuff(urlRedirect)
- );
- StringLength(headers) = (int) strlen(StringBuff(headers));
- /* */
- StringRoom(output, 1024 + sizeof(PROXYTRACK_COMMENT_HEADER) + sizeof(DISABLE_IE_FRIENDLY_HTTP_ERROR_MESSAGES));
- sprintf(StringBuffRW(output),
- "<html>"
- PROXYTRACK_COMMENT_HEADER
- DISABLE_IE_FRIENDLY_HTTP_ERROR_MESSAGES
- "<head>"
- "<title>ProxyTrack - Page has moved</title>"
- "</head>\r\n"
- "<body>"
- "<h3>The correct location is:</h3><br />"
- "<b><a href=\"%s\">%s</a></b><br />"
- "<br />"
- "<br />\r\n"
- "<i>Generated by ProxyTrack " PROXYTRACK_VERSION ", (C) Xavier Roche and other contributors</i>"
- "\r\n"
- "</body>"
- "</header>",
- StringBuff(urlRedirect),
- StringBuff(urlRedirect));
- StringLength(output) = (int) strlen(StringBuff(output));
- }
- }
- if (msgCode == 0) {
- msgCode = 404;
- msgError = "Not Found in this cache";
- }
- }
- }
- } else {
- msgCode = 500;
- msgError = "Server Error";
- keepAlive = 0;
- }
- if (StringLength(headers) == 0) {
- if (msgCode == 0) {
- msgCode = 500;
- msgError = "Internal Proxy Error";
- } else if (msgError == NULL) {
- msgError = GetHttpMessage(msgCode);
- }
- StringRoom(headers, 256);
- sprintf(StringBuffRW(headers),
- "HTTP/1.1 %d %s\r\n"
- "Content-type: text/html\r\n",
- msgCode,
- msgError);
- StringLength(headers) = (int) strlen(StringBuff(headers));
- StringRoom(output, 1024 + sizeof(PROXYTRACK_COMMENT_HEADER) + sizeof(DISABLE_IE_FRIENDLY_HTTP_ERROR_MESSAGES));
- sprintf(StringBuffRW(output),
- "<html>"
- PROXYTRACK_COMMENT_HEADER
- DISABLE_IE_FRIENDLY_HTTP_ERROR_MESSAGES
- "<head>"
- "<title>ProxyTrack - HTTP Proxy Error %d</title>"
- "</head>\r\n"
- "<body>"
- "<h3>A proxy error has occured while processing the request.</h3><br />"
- "<b>Error HTTP %d: <i>%s</i></b><br />"
- "<br />"
- "<br />\r\n"
- "<i>Generated by ProxyTrack " PROXYTRACK_VERSION ", (C) Xavier Roche and other contributors</i>"
- "\r\n"
- "</body>"
- "</html>",
- msgCode,
- msgCode,
- msgError);
- StringLength(output) = (int) strlen(StringBuff(output));
- }
- {
- char tmp[20 + 1]; /* 2^64 = 18446744073709551616 */
- size_t dataSize = 0;
- if (!headRequest) {
- dataSize = StringLength(output);
- if (dataSize == 0 && element != NULL) {
- dataSize = element->size;
- }
- }
- sprintf(tmp, "%d", (int) dataSize);
- StringCat(headers, "Content-length: ");
- StringCat(headers, tmp);
- StringCat(headers, "\r\n");
- }
- if (keepAlive) {
- StringCat(headers,
- "Connection: Keep-Alive\r\n"
- "Proxy-Connection: Keep-Alive\r\n");
- } else {
- StringCat(headers,
- "Connection: Close\r\n"
- "Proxy-Connection: Close\r\n");
- }
- if (msgCode != 500)
- StringCat(headers, "X-Cache: HIT from ");
- else
- StringCat(headers, "X-Cache: MISS from ");
- StringCat(headers, StringBuff(localhost));
- StringCat(headers, "\r\n");
-
- /* Logging */
- {
- const char * contentType = "text/html";
- size_t size = StringLength(output) ? StringLength(output) : ( element ? element->size : 0 );
- /* */
- String ip = STRING_EMPTY;
- SOCaddr serverClient;
- int lenServerClient = (int) sizeof(serverClient);
- memset(&serverClient, 0, sizeof(serverClient));
- if (getsockname(soc_c, (struct sockaddr*) &serverClient, &lenServerClient) == 0) {
- ip = getip(&serverClient, lenServerClient);
- } else {
- StringCopy(ip, "unknown");
- }
- if (element != NULL && element->contenttype[0] != '\0') {
- contentType = element->contenttype;
- }
- LOG("HTTP %s %d %d %s %s %s" _ StringBuff(ip) _ msgCode _ (int)size _ command _ StringBuff(url) _ contentType);
- StringFree(ip);
- }
-
- /* Send reply */
- StringCat(headers, "Server: ProxyTrack " PROXYTRACK_VERSION " (HTTrack " HTTRACK_VERSIONID ")\r\n");
- StringCat(headers, "\r\n"); /* Headers separator */
- if (send(soc_c, StringBuff(headers), (int)StringLength(headers), 0) != StringLength(headers)
- || ( !headRequest && StringLength(output) > 0 && send(soc_c, StringBuff(output), (int)StringLength(output), 0) != StringLength(output))
- || ( !headRequest && StringLength(output) == 0 && element != NULL && element->adr != NULL && send(soc_c, element->adr, (int)element->size, 0) != element->size)
- )
- {
- keepAlive = 0; /* Error, abort connection */
- }
- PT_Element_Delete(&element);
-
- /* Shutdown (FIN) and wait until confirmed */
- if (!keepAlive) {
- char c;
- #ifdef _WIN32
- shutdown(soc_c, SD_SEND);
- #else
- shutdown(soc_c, 1);
- #endif
- while(recv(soc_c, ((char*)&c), 1, 0) > 0);
- }
- } while(keepAlive);
-
- #ifdef _WIN32
- closesocket(soc_c);
- #else
- close(soc_c);
- #endif
-
- StringFree(url);
- StringFree(urlRedirect);
- StringFree(headers);
- StringFree(output);
- StringFree(host);
-
- if (buffer)
- free(buffer);
- }
-
- /* Generic threaded function start */
- static int startThread(void (*funct)(void*), void* param)
- {
- if (param != NULL) {
- #ifdef _WIN32
- if (_beginthread(funct, 0, param) == -1) {
- free(param);
- return 0;
- }
- return 1;
- #else
- pthread_t handle = 0;
- int retcode;
- retcode = pthread_create(&handle, NULL, funct, param);
- if (retcode != 0) { /* error */
- free(param);
- return 0;
- } else {
- /* detach the thread from the main process so that is can be independent */
- pthread_detach(handle);
- return 1;
- }
- #endif
- } else {
- return 0;
- }
- }
-
- /* Generic socket/index structure */
- typedef struct proxytrack_process_th_p {
- T_SOC soc_c;
- PT_Indexes indexes;
- void (*process)(PT_Indexes indexes, T_SOC soc_c);
- } proxytrack_process_th_p;
-
- /* Generic socket/index function stub */
- static void proxytrack_process_th(void* param_) {
- proxytrack_process_th_p *param = (proxytrack_process_th_p *) param_;
- T_SOC soc_c = param->soc_c;
- PT_Indexes indexes = param->indexes;
- void (*process)(PT_Indexes indexes, T_SOC soc_c) = param->process;
- free(param);
- process(indexes, soc_c);
- return ;
- }
-
- /* Process generic socket/index operation */
- static int proxytrack_process_generic(void (*process)(PT_Indexes indexes, T_SOC soc_c),
- PT_Indexes indexes, T_SOC soc_c)
- {
- proxytrack_process_th_p *param = calloc(sizeof(proxytrack_process_th_p), 1);
- if (param != NULL) {
- param->soc_c = soc_c;
- param->indexes = indexes;
- param->process = process;
- return startThread(proxytrack_process_th, param);
- } else {
- CRITICAL("proxytrack_process_generic:Memory exhausted");
- return 0;
- }
- return 0;
- }
-
- /* Process HTTP proxy requests */
- static int proxytrack_process_HTTP_threaded(PT_Indexes indexes, T_SOC soc) {
- return proxytrack_process_generic(proxytrack_process_HTTP, indexes, soc);
- }
-
- /* HTTP Server */
- static int proxytrack_start_HTTP(PT_Indexes indexes, T_SOC soc) {
- while(soc != INVALID_SOCKET) {
- T_SOC soc_c;
- struct sockaddr clientAddr;
- int clientAddrLen = sizeof(struct sockaddr);
- memset(&clientAddr, 0, sizeof(clientAddr));
- if ( (soc_c = (T_SOC) accept(soc, &clientAddr, &clientAddrLen)) != INVALID_SOCKET) {
- if (!proxytrack_process_HTTP_threaded(indexes, soc_c)) {
- CRITICAL("proxytrack_start_HTTP::Can not fork a thread");
- }
- }
- }
- if (soc != INVALID_SOCKET) {
- #ifdef _WIN32
- closesocket(soc);
- #else
- close(soc);
- #endif
- }
- return 1;
- }
-
- /* Network order is big endian */
- #define READ_NET16(buffer) ( ( ((unsigned char*)buffer)[0] << 8 ) + ((unsigned char*)buffer)[1] )
- #define READ_NET32(buffer) ( ( READ_NET16(buffer) << 16 ) + READ_NET16(((unsigned char*)buffer) + 2) )
- #define WRITE_NET8(buffer, value) do { \
- ((unsigned char*)buffer)[0] = (unsigned char)(value); \
- } while(0)
- #define WRITE_NET16(buffer, value) do { \
- ((unsigned char*)buffer)[0] = (((unsigned short)(value)) >> 8) & 0xff; \
- ((unsigned char*)buffer)[1] = ((unsigned short)(value)) & 0xff; \
- } while(0)
- #define WRITE_NET32(buffer, value) do { \
- WRITE_NET16(buffer, ( ((unsigned int)(value)) >> 16 ) & 0xffff); \
- WRITE_NET16(((unsigned char*)buffer) + 2, ( ((unsigned int)(value)) ) & 0xffff); \
- } while(0)
-
- static int ICP_reply(struct sockaddr * clientAddr,
- int clientAddrLen,
- T_SOC soc,
- /* */
- unsigned char Opcode,
- unsigned char Version,
- unsigned short Message_Length,
- unsigned int Request_Number,
- unsigned int Options,
- unsigned int Option_Data,
- unsigned int Sender_Host_Address,
- unsigned char *Message
- )
- {
- int ret = 0;
- unsigned long int BufferSize;
- unsigned char * buffer;
- if (Message_Length == 0 && Message != NULL) /* We have to get the message size */
- Message_Length = (unsigned int) strlen(Message) + 1; /* NULL terminated */
- BufferSize = 20 + Message_Length;
- buffer = malloc(BufferSize);
- if (buffer != NULL) {
- WRITE_NET8(&buffer[0], Opcode);
- WRITE_NET8(&buffer[1], Version);
- WRITE_NET16(&buffer[2], Message_Length);
- WRITE_NET32(&buffer[4], Request_Number);
- WRITE_NET32(&buffer[8], Options);
- WRITE_NET32(&buffer[12], Option_Data);
- WRITE_NET32(&buffer[16], Sender_Host_Address);
- if (Message != NULL && Message_Length > 0) {
- memcpy(buffer + 20, Message, Message_Length);
- }
- if (sendto(soc, buffer, BufferSize, 0, clientAddr, clientAddrLen) == BufferSize) {
- ret = 1;
- }
- free(buffer);
- }
- return ret;
- }
-
- /* ICP Server */
- static int proxytrack_start_ICP(PT_Indexes indexes, T_SOC soc) {
- /* "ICP messages MUST not exceed 16,384 octets in length." (RFC2186) */
- int bufferSize = 16384;
- unsigned char * buffer = (unsigned char*) malloc(bufferSize + 1);
- if (buffer == NULL) {
- CRITICAL("proxytrack_start_ICP:memory exhausted");
- #ifdef _WIN32
- closesocket(soc);
- #else
- close(soc);
- #endif
- return -1;
- }
- while(soc != INVALID_SOCKET) {
- struct sockaddr clientAddr;
- int clientAddrLen = sizeof(struct sockaddr);
- int n;
- memset(&clientAddr, 0, sizeof(clientAddr));
- n = recvfrom(soc, (char*)buffer, bufferSize, 0, &clientAddr, &clientAddrLen);
- if (n != -1) {
- const char * LogRequest = "ERROR";
- const char * LogReply = "ERROR";
- unsigned char * UrlRequest = NULL;
- if (n >= 20) {
- enum {
- ICP_OP_MIN = 0,
- ICP_OP_INVALID = 0,
- ICP_OP_QUERY = 1,
- ICP_OP_HIT = 2,
- ICP_OP_MISS = 3,
- ICP_OP_ERR = 4,
- ICP_OP_SECHO = 10,
- ICP_OP_DECHO = 11,
- ICP_OP_MISS_NOFETCH = 21,
- ICP_OP_DENIED = 22,
- ICP_OP_HIT_OBJ = 23,
- ICP_OP_MAX = ICP_OP_HIT_OBJ
- };
- unsigned char Opcode = buffer[0];
- unsigned char Version = buffer[1];
- unsigned short Message_Length = READ_NET16(&buffer[2]);
- unsigned int Request_Number = READ_NET32(&buffer[4]); /* Session ID */
- unsigned int Options = READ_NET32(&buffer[8]);
- unsigned int Option_Data = READ_NET32(&buffer[12]); /* ICP_FLAG_SRC_RTT */
- unsigned int Sender_Host_Address = READ_NET32(&buffer[16]); /* ignored */
- unsigned char* Payload = &buffer[20];
- buffer[bufferSize] = '\0'; /* Ensure payload is NULL terminated */
- if (Message_Length <= bufferSize - 20) {
- if (Opcode >= ICP_OP_MIN && Opcode <= ICP_OP_MAX) {
- if (Version == 2) {
- switch(Opcode) {
- case ICP_OP_QUERY:
- {
- unsigned int UrlRequestSize;
- UrlRequest = &Payload[4];
- UrlRequestSize = (unsigned int)strlen((char*)UrlRequest);
- LogRequest = "ICP_OP_QUERY";
- if (indexes == NULL) {
- ICP_reply(&clientAddr, clientAddrLen, soc, ICP_OP_DENIED, Version, 0, Request_Number, 0, 0, 0, UrlRequest);
- LogReply = "ICP_OP_DENIED";
- } else if (PT_LookupIndex(indexes, UrlRequest)) {
- ICP_reply(&clientAddr, clientAddrLen, soc, ICP_OP_HIT, Version, 0, Request_Number, 0, 0, 0, UrlRequest);
- LogReply = "ICP_OP_HIT";
- } else {
- if (UrlRequestSize > 0 && UrlRequest[UrlRequestSize - 1] != '/' && strchr(UrlRequest, '?') == NULL) {
- char * UrlRedirect = malloc(UrlRequestSize + 1 + 1);
- if (UrlRedirect != NULL) {
- sprintf(UrlRedirect, "%s/", UrlRequest);
- if (PT_LookupIndex(indexes, UrlRedirect)) { /* We'll generate a redirect */
- ICP_reply(&clientAddr, clientAddrLen, soc, ICP_OP_HIT, Version, 0, Request_Number, 0, 0, 0, UrlRequest);
- LogReply = "ICP_OP_HIT";
- free(UrlRedirect);
- break;
- }
- free(UrlRedirect);
- }
- }
- /* We won't retrive the cache MISS online, no way! */
- ICP_reply(&clientAddr, clientAddrLen, soc, ICP_OP_MISS_NOFETCH, Version, 0, Request_Number, 0, 0, 0, UrlRequest);
- LogReply = "ICP_OP_MISS_NOFETCH";
- }
- }
- break;
- case ICP_OP_SECHO:
- {
- UrlRequest = &Payload[4];
- LogRequest = "ICP_OP_QUERY";
- LogReply = "ICP_OP_QUERY";
- ICP_reply(&clientAddr, clientAddrLen, soc, ICP_OP_SECHO, Version, 0, Request_Number, 0, 0, 0, UrlRequest);
- }
- break;
- default:
- LogRequest = "NOTIMPLEMENTED";
- LogReply = "ICP_OP_ERR";
- ICP_reply(&clientAddr, clientAddrLen, soc, ICP_OP_ERR, Version, 0, Request_Number, 0, 0, 0, NULL);
- break;
- }
- } else {
- ICP_reply(&clientAddr, clientAddrLen, soc, ICP_OP_ERR, 2, 0, Request_Number, 0, 0, 0, NULL);
- }
- } /* Ignored (RFC2186) */
- } else {
- ICP_reply(&clientAddr, clientAddrLen, soc, ICP_OP_ERR, Version, 0, Request_Number, 0, 0, 0, NULL);
- }
- }
-
- /* Logging */
- {
- String ip = STRING_EMPTY;
- SOCaddr serverClient;
- int lenServerClient = (int) sizeof(serverClient);
- SOCaddr_copyaddr(serverClient, lenServerClient, &clientAddr, clientAddrLen);
- if (lenServerClient > 0) {
- ip = getip(&serverClient, lenServerClient);
- } else {
- StringCopy(ip, "unknown");
- }
- LOG("ICP %s %s/%s %s" _ StringBuff(ip) _ LogRequest _ LogReply _ (UrlRequest ? UrlRequest : "-") );
- StringFree(ip);
- }
-
- }
- }
- if (soc != INVALID_SOCKET) {
- #ifdef _WIN32
- closesocket(soc);
- #else
- close(soc);
- #endif
- }
- free(buffer);
- return 1;
- }
-
- static int proxytrack_start(PT_Indexes indexes, T_SOC soc, T_SOC socICP) {
- int ret = 1;
- if (proxytrack_process_generic(proxytrack_start_ICP, indexes, socICP)) {
- //if (!proxytrack_process_generic(proxytrack_start_HTTP, indexes, soc))
- if (!proxytrack_start_HTTP(indexes, soc)) {
- ret = 0;
- }
- } else {
- ret = 0;
- }
- return ret;
- }
-
-