+#include <config.h>
+
#include <apt-pkg/strutl.h>
#include <apt-pkg/fileutl.h>
#include <apt-pkg/error.h>
#include <sys/socket.h>
#include <sys/types.h>
+#include <sys/stat.h>
#include <netinet/in.h>
#include <unistd.h>
#include <errno.h>
#include <time.h>
#include <stdlib.h>
+#include <dirent.h>
+#include <signal.h>
-char const * const httpcodeToStr(int httpcode) { /*{{{*/
+char const * const httpcodeToStr(int const httpcode) { /*{{{*/
switch (httpcode) {
// Informational 1xx
case 100: return "100 Continue";
case 404: return "404 Not Found";
case 405: return "405 Method Not Allowed";
case 406: return "406 Not Acceptable";
- case 407: return "Proxy Authentication Required";
- case 408: return "Request Time-out";
- case 409: return "Conflict";
- case 410: return "Gone";
- case 411: return "Length Required";
- case 412: return "Precondition Failed";
- case 413: return "Request Entity Too Large";
- case 414: return "Request-URI Too Large";
- case 415: return "Unsupported Media Type";
- case 416: return "Requested range not satisfiable";
- case 417: return "Expectation Failed";
+ case 407: return "407 Proxy Authentication Required";
+ case 408: return "408 Request Time-out";
+ case 409: return "409 Conflict";
+ case 410: return "410 Gone";
+ case 411: return "411 Length Required";
+ case 412: return "412 Precondition Failed";
+ case 413: return "413 Request Entity Too Large";
+ case 414: return "414 Request-URI Too Large";
+ case 415: return "415 Unsupported Media Type";
+ case 416: return "416 Requested range not satisfiable";
+ case 417: return "417 Expectation Failed";
// Server error 5xx
- case 500: return "Internal Server Error";
- case 501: return "Not Implemented";
- case 502: return "Bad Gateway";
- case 503: return "Service Unavailable";
- case 504: return "Gateway Time-out";
- case 505: return "HTTP Version not supported";
+ case 500: return "500 Internal Server Error";
+ case 501: return "501 Not Implemented";
+ case 502: return "502 Bad Gateway";
+ case 503: return "503 Service Unavailable";
+ case 504: return "504 Gateway Time-out";
+ case 505: return "505 HTTP Version not supported";
}
return NULL;
-} /*}}}*/
-
-void addFileHeaders(std::list<std::string> &headers, FileFd &data) { /*{{{*/
+}
+ /*}}}*/
+void addFileHeaders(std::list<std::string> &headers, FileFd &data) { /*{{{*/
std::ostringstream contentlength;
contentlength << "Content-Length: " << data.FileSize();
headers.push_back(contentlength.str());
std::string lastmodified("Last-Modified: ");
lastmodified.append(TimeRFC1123(data.ModificationTime()));
headers.push_back(lastmodified);
-} /*}}}*/
-bool sendHead(int client, int httpcode, std::list<std::string> &headers) { /*{{{*/
- string response("HTTP/1.1 ");
+}
+ /*}}}*/
+void addDataHeaders(std::list<std::string> &headers, std::string &data) {/*{{{*/
+ std::ostringstream contentlength;
+ contentlength << "Content-Length: " << data.size();
+ headers.push_back(contentlength.str());
+}
+ /*}}}*/
+bool sendHead(int const client, int const httpcode, std::list<std::string> &headers) { /*{{{*/
+ std::string response("HTTP/1.1 ");
response.append(httpcodeToStr(httpcode));
headers.push_front(response);
for (std::list<std::string>::const_iterator h = headers.begin();
Success == true && h != headers.end(); ++h) {
Success &= FileFd::Write(client, h->c_str(), h->size());
- Success &= FileFd::Write(client, "\r\n", 2);
+ if (Success == true)
+ Success &= FileFd::Write(client, "\r\n", 2);
std::clog << *h << std::endl;
}
- Success &= FileFd::Write(client, "\r\n", 2);
+ if (Success == true)
+ Success &= FileFd::Write(client, "\r\n", 2);
std::clog << "<<<<<<<<<<<<<<<<" << std::endl;
return Success;
-} /*}}}*/
-
-bool sendFile(int client, FileFd &data) { /*{{{*/
+}
+ /*}}}*/
+bool sendFile(int const client, FileFd &data) { /*{{{*/
bool Success = true;
char buffer[500];
unsigned long long actual = 0;
break;
Success &= FileFd::Write(client, buffer, actual);
}
- Success &= FileFd::Write(client, "\r\n", 2);
+ if (Success == true)
+ Success &= FileFd::Write(client, "\r\n", 2);
return Success;
-} /*}}}*/
-
-bool sendData(int client, std::string &data) { /*{{{*/
+}
+ /*}}}*/
+bool sendData(int const client, std::string const &data) { /*{{{*/
bool Success = true;
Success &= FileFd::Write(client, data.c_str(), data.size());
- Success &= FileFd::Write(client, "\r\n", 2);
+ if (Success == true)
+ Success &= FileFd::Write(client, "\r\n", 2);
return Success;
-} /*}}}*/
-
-void sendError(int client, int httpcode, string request, bool content) { /*{{{*/
+}
+ /*}}}*/
+void sendError(int const client, int const httpcode, std::string const &request, bool content, std::string const &error = "") { /*{{{*/
std::list<std::string> headers;
+ std::string response("<html><head><title>");
+ response.append(httpcodeToStr(httpcode)).append("</title></head>");
+ response.append("<body><h1>").append(httpcodeToStr(httpcode)).append("</h1>");
+ if (error.empty() == false)
+ response.append("<p><em>Error</em>: ").append(error).append("</p>");
+ response.append("This error is a result of the request: <pre>");
+ response.append(request).append("</pre></body></html>");
+ addDataHeaders(headers, response);
sendHead(client, httpcode, headers);
- if (content == false)
- return;
- string response("<html><head><title>");
+ if (content == true)
+ sendData(client, response);
+}
+ /*}}}*/
+void sendRedirect(int const client, int const httpcode, std::string const &uri, std::string const &request, bool content) { /*{{{*/
+ std::list<std::string> headers;
+ std::string response("<html><head><title>");
response.append(httpcodeToStr(httpcode)).append("</title></head>");
response.append("<body><h1>").append(httpcodeToStr(httpcode)).append("</h1");
- response.append("This error is a result of the request: <pre>");
+ response.append("<p>You should be redirected to <em>").append(uri).append("</em></p>");
+ response.append("This page is a result of the request: <pre>");
response.append(request).append("</pre></body></html>");
- sendData(client, response);
-} /*}}}*/
+ addDataHeaders(headers, response);
+ std::string location("Location: ");
+ if (strncmp(uri.c_str(), "http://", 7) != 0)
+ location.append("http://").append(LookupTag(request, "Host")).append("/").append(uri);
+ else
+ location.append(uri);
+ headers.push_back(location);
+ sendHead(client, httpcode, headers);
+ if (content == true)
+ sendData(client, response);
+}
+ /*}}}*/
+// sendDirectoryLisiting /*{{{*/
+int filter_hidden_files(const struct dirent *a) {
+ if (a->d_name[0] == '.')
+ return 0;
+#ifdef _DIRENT_HAVE_D_TYPE
+ // if we have the d_type check that only files and dirs will be included
+ if (a->d_type != DT_UNKNOWN &&
+ a->d_type != DT_REG &&
+ a->d_type != DT_LNK && // this includes links to regular files
+ a->d_type != DT_DIR)
+ return 0;
+#endif
+ return 1;
+}
+int grouped_alpha_case_sort(const struct dirent **a, const struct dirent **b) {
+#ifdef _DIRENT_HAVE_D_TYPE
+ if ((*a)->d_type == DT_DIR && (*b)->d_type == DT_DIR);
+ else if ((*a)->d_type == DT_DIR && (*b)->d_type == DT_REG)
+ return -1;
+ else if ((*b)->d_type == DT_DIR && (*a)->d_type == DT_REG)
+ return 1;
+ else
+#endif
+ {
+ struct stat f_prop; //File's property
+ stat((*a)->d_name, &f_prop);
+ int const amode = f_prop.st_mode;
+ stat((*b)->d_name, &f_prop);
+ int const bmode = f_prop.st_mode;
+ if (S_ISDIR(amode) && S_ISDIR(bmode));
+ else if (S_ISDIR(amode))
+ return -1;
+ else if (S_ISDIR(bmode))
+ return 1;
+ }
+ return strcasecmp((*a)->d_name, (*b)->d_name);
+}
+void sendDirectoryListing(int const client, std::string const &dir, std::string const &request, bool content) {
+ std::list<std::string> headers;
+ std::ostringstream listing;
-int main(int argc, const char *argv[])
+ struct dirent **namelist;
+ int const counter = scandir(dir.c_str(), &namelist, filter_hidden_files, grouped_alpha_case_sort);
+ if (counter == -1) {
+ sendError(client, 500, request, content);
+ return;
+ }
+
+ listing << "<html><head><title>Index of " << dir << "</title>"
+ << "<style type=\"text/css\"><!-- td {padding: 0.02em 0.5em 0.02em 0.5em;}"
+ << "tr:nth-child(even){background-color:#dfdfdf;}"
+ << "h1, td:nth-child(3){text-align:center;}"
+ << "table {margin-left:auto;margin-right:auto;} --></style>"
+ << "</head>" << std::endl
+ << "<body><h1>Index of " << dir << "</h1>" << std::endl
+ << "<table><tr><th>#</th><th>Name</th><th>Size</th><th>Last-Modified</th></tr>" << std::endl;
+ if (dir != ".")
+ listing << "<tr><td>d</td><td><a href=\"..\">Parent Directory</a></td><td>-</td><td>-</td></tr>";
+ for (int i = 0; i < counter; ++i) {
+ struct stat fs;
+ std::string filename(dir);
+ filename.append("/").append(namelist[i]->d_name);
+ stat(filename.c_str(), &fs);
+ if (S_ISDIR(fs.st_mode)) {
+ listing << "<tr><td>d</td>"
+ << "<td><a href=\"" << namelist[i]->d_name << "/\">" << namelist[i]->d_name << "</a></td>"
+ << "<td>-</td>";
+ } else {
+ listing << "<tr><td>f</td>"
+ << "<td><a href=\"" << namelist[i]->d_name << "\">" << namelist[i]->d_name << "</a></td>"
+ << "<td>" << SizeToStr(fs.st_size) << "B</td>";
+ }
+ listing << "<td>" << TimeRFC1123(fs.st_mtime) << "</td></tr>" << std::endl;
+ }
+ listing << "</table></body></html>" << std::endl;
+
+ std::string response(listing.str());
+ addDataHeaders(headers, response);
+ sendHead(client, 200, headers);
+ if (content == true)
+ sendData(client, response);
+}
+ /*}}}*/
+bool parseFirstLine(int const client, std::string const &request, std::string &filename, bool &sendContent) { /*{{{*/
+ if (strncmp(request.c_str(), "HEAD ", 5) == 0)
+ sendContent = false;
+ if (strncmp(request.c_str(), "GET ", 4) != 0)
+ {
+ sendError(client, 501, request, true);
+ return false;
+ }
+
+ size_t const lineend = request.find('\n');
+ size_t filestart = request.find(' ');
+ for (; request[filestart] == ' '; ++filestart);
+ size_t fileend = request.rfind(' ', lineend);
+ if (lineend == std::string::npos || filestart == std::string::npos ||
+ fileend == std::string::npos || filestart == fileend) {
+ sendError(client, 500, request, sendContent, "Filename can't be extracted");
+ return false;
+ }
+
+ size_t httpstart = fileend;
+ for (; request[httpstart] == ' '; ++httpstart);
+ if (strncmp(request.c_str() + httpstart, "HTTP/1.1\r", 9) != 0) {
+ sendError(client, 500, request, sendContent, "Not an HTTP/1.1 request");
+ return false;
+ }
+
+ filename = request.substr(filestart, fileend - filestart);
+ if (filename.find(' ') != std::string::npos) {
+ sendError(client, 500, request, sendContent, "Filename contains an unencoded space");
+ return false;
+ }
+ filename = DeQuoteString(filename);
+
+ // this is not a secure server, but at least prevent the obvious …
+ if (filename.empty() == true || filename[0] != '/' ||
+ strncmp(filename.c_str(), "//", 2) == 0 ||
+ filename.find_first_of("\r\n\t\f\v") != std::string::npos ||
+ filename.find("/../") != std::string::npos) {
+ sendError(client, 400, request, sendContent, "Filename contains illegal character (sequence)");
+ return false;
+ }
+
+ // nuke the first character which is a / as we assured above
+ filename.erase(0, 1);
+ if (filename.empty() == true)
+ filename = ".";
+ return true;
+}
+ /*}}}*/
+int main(int const argc, const char * argv[])
{
CommandLine::Args Args[] = {
- {0, "simulate-paywall", "aptwebserver::Simulate-Paywall",
+ {0, "simulate-paywall", "aptwebserver::Simulate-Paywall",
CommandLine::Boolean},
{0, "port", "aptwebserver::port", CommandLine::HasArg},
+ {'c',"config-file",0,CommandLine::ConfigFile},
+ {'o',"option",0,CommandLine::ArbItem},
{0,0,0,0}
};
CommandLine CmdL(Args, _config);
- if(pkgInitConfig(*_config) == false || CmdL.Parse(argc,argv) == false) {
+ if(CmdL.Parse(argc,argv) == false) {
_error->DumpErrors();
exit(1);
}
// create socket, bind and listen to it {{{
+ // ignore SIGPIPE, this can happen on write() if the socket closes connection
+ signal(SIGPIPE, SIG_IGN);
int sock = socket(AF_INET6, SOCK_STREAM, 0);
if(sock < 0 ) {
_error->Errno("aptwerbserver", "Couldn't create socket");
}
listen(sock, 1);
+ /*}}}*/
std::vector<std::string> messages;
int client;
while ((client = accept(sock, NULL, NULL)) != -1) {
std::clog << "ACCEPT client " << client
- << " on socket " << sock << std::endl;
+ << " on socket " << sock << std::endl;
while (ReadMessages(client, messages)) {
for (std::vector<std::string>::const_iterator m = messages.begin();
m != messages.end(); ++m) {
- std::clog << ">>> REQUEST >>>>" << std::endl << *m
- << std::endl << "<<<<<<<<<<<<<<<<" << std::endl;
+ std::clog << ">>> REQUEST >>>>" << std::endl << *m
+ << std::endl << "<<<<<<<<<<<<<<<<" << std::endl;
+
std::list<std::string> headers;
+ std::string filename;
bool sendContent = true;
- if (strncmp(m->c_str(), "HEAD ", 5) == 0)
- sendContent = false;
- if (strncmp(m->c_str(), "GET ", 4) != 0)
- sendError(client, 501, *m, true);
+ if (parseFirstLine(client, *m, filename, sendContent) == false)
+ continue;
std::string host = LookupTag(*m, "Host", "");
if (host.empty() == true) {
- // RFC 2616 §14.23 Host
- sendError(client, 400, *m, sendContent);
+ // RFC 2616 §14.23 requires Host
+ sendError(client, 400, *m, sendContent, "Host header is required");
continue;
}
- size_t const filestart = m->find(' ', 5);
- string filename = m->substr(5, filestart - 5);
-
- if (simulate_broken_server == true) {
- sendHead(client, 200, headers);
- string data("ni ni ni");
- sendData(client, data);
- }
- else if (RealFileExists(filename) == false)
- sendError(client, 404, *m, sendContent);
- else {
+ if (simulate_broken_server == true) {
+ std::string data("ni ni ni\n");
+ addDataHeaders(headers, data);
+ sendHead(client, 200, headers);
+ sendData(client, data);
+ }
+ else if (RealFileExists(filename) == true) {
FileFd data(filename, FileFd::ReadOnly);
std::string condition = LookupTag(*m, "If-Modified-Since", "");
if (condition.empty() == false) {
time_t cache;
- if (RFC1123StrToTime(condition.c_str(), cache) == true &&
- cache >= data.ModificationTime()) {
- sendError(client, 304, *m, false);
+ if (RFC1123StrToTime(condition.c_str(), cache) == true &&
+ cache >= data.ModificationTime()) {
+ sendHead(client, 304, headers);
continue;
}
}
if (sendContent == true)
sendFile(client, data);
}
+ else if (DirectoryExists(filename) == true) {
+ if (filename == "." || filename[filename.length()-1] == '/')
+ sendDirectoryListing(client, filename, *m, sendContent);
+ else
+ sendRedirect(client, 301, filename.append("/"), *m, sendContent);
+ }
+ else
+ {
+ ::Configuration::Item const *Replaces = _config->Tree("aptwebserver::redirect::replace");
+ if (Replaces != NULL) {
+ std::string redirect = "/" + filename;
+ for (::Configuration::Item *I = Replaces->Child; I != NULL; I = I->Next)
+ redirect = SubstVar(redirect, I->Tag, I->Value);
+ redirect.erase(0,1);
+ if (redirect != filename) {
+ sendRedirect(client, 301, redirect, *m, sendContent);
+ continue;
+ }
+ }
+ sendError(client, 404, *m, sendContent);
+ }
}
_error->DumpErrors(std::cerr);
messages.clear();
}
- std::clog << "CLOSE client " << client
- << " on socket " << sock << std::endl;
+ std::clog << "CLOSE client " << client
+ << " on socket " << sock << std::endl;
close(client);
}
return 0;
projects / apt.git / blobdiff