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android / platform / external / libcups / 2e4ff8af / . / scheduler / client.c
blob: f6c106a78039455e17ce82e0051f4e45fb00c914 [file] [log] [blame]
/*
* "$Id: client.c 6999 2007-09-28 19:46:53Z mike $"
*
* Client routines for the Common UNIX Printing System (CUPS) scheduler.
*
* Copyright 2007 by Apple Inc.
* Copyright 1997-2007 by Easy Software Products, all rights reserved.
*
* This file contains Kerberos support code, copyright 2006 by
* Jelmer Vernooij.
*
* These coded instructions, statements, and computer programs are the
* property of Apple Inc. and are protected by Federal copyright
* law. Distribution and use rights are outlined in the file "LICENSE.txt"
* which should have been included with this file. If this file is
* file is missing or damaged, see the license at "http://www.cups.org/".
*
* Contents:
*
* cupsdAcceptClient() - Accept a new client.
* cupsdCloseAllClients() - Close all remote clients immediately.
* cupsdCloseClient() - Close a remote client.
* cupsdFlushHeader() - Flush the header fields to the client.
* cupsdReadClient() - Read data from a client.
* cupsdSendCommand() - Send output from a command via HTTP.
* cupsdSendError() - Send an error message via HTTP.
* cupsdSendHeader() - Send an HTTP request.
* cupsdUpdateCGI() - Read status messages from CGI scripts and programs.
* cupsdWriteClient() - Write data to a client as needed.
* check_if_modified() - Decode an "If-Modified-Since" line.
* encrypt_client() - Enable encryption for the client...
* get_cdsa_certificate() - Convert a keychain name into the CFArrayRef
* required by SSLSetCertificate.
* get_file() - Get a filename and state info.
* install_conf_file() - Install a configuration file.
* is_cgi() - Is the resource a CGI script/program?
* is_path_absolute() - Is a path absolute and free of relative elements.
* make_certificate() - Make a self-signed SSL/TLS certificate.
* pipe_command() - Pipe the output of a command to the remote client.
* write_file() - Send a file via HTTP.
* write_pipe() - Flag that data is available on the CGI pipe.
*/
/*
* Include necessary headers...
*/
#include <cups/http-private.h>
#include "cupsd.h"
#ifdef HAVE_CDSASSL
# include <Security/Security.h>
# ifdef HAVE_SECIDENTITYSEARCHPRIV_H
# include <Security/SecIdentitySearchPriv.h>
# else /* Declare prototype for function in that header... */
extern OSStatus SecIdentitySearchCreateWithPolicy(SecPolicyRef policy,
CFStringRef idString, CSSM_KEYUSE keyUsage,
CFTypeRef keychainOrArray,
Boolean returnOnlyValidIdentities,
SecIdentitySearchRef* searchRef);
# endif /* HAVE_SECIDENTITYSEARCHPRIV_H */
# ifdef HAVE_SECPOLICYPRIV_H
# include <Security/SecPolicyPriv.h>
# else /* Declare prototype for function in that header... */
extern OSStatus SecPolicySetValue(SecPolicyRef policyRef,
const CSSM_DATA *value);
# endif /* HAVE_SECPOLICYPRIV_H */
# ifdef HAVE_SECBASEPRIV_H
# include <Security/SecBasePriv.h>
# else /* Declare prototype for function in that header... */
extern const char *cssmErrorString(int error);
# endif /* HAVE_SECBASEPRIV_H */
#endif /* HAVE_CDSASSL */
#ifdef HAVE_GNUTLS
# include <gnutls/x509.h>
#endif /* HAVE_GNUTLS */
/*
* Local functions...
*/
static int check_if_modified(cupsd_client_t *con,
struct stat *filestats);
#ifdef HAVE_SSL
static int encrypt_client(cupsd_client_t *con);
#endif /* HAVE_SSL */
#ifdef HAVE_CDSASSL
static CFArrayRef get_cdsa_certificate(cupsd_client_t *con);
#endif /* HAVE_CDSASSL */
static char *get_file(cupsd_client_t *con, struct stat *filestats,
char *filename, int len);
static http_status_t install_conf_file(cupsd_client_t *con);
static int is_cgi(cupsd_client_t *con, const char *filename,
struct stat *filestats, mime_type_t *type);
static int is_path_absolute(const char *path);
#ifdef HAVE_SSL
static int make_certificate(cupsd_client_t *con);
#endif /* HAVE_SSL */
static int pipe_command(cupsd_client_t *con, int infile, int *outfile,
char *command, char *options, int root);
static int write_file(cupsd_client_t *con, http_status_t code,
char *filename, char *type,
struct stat *filestats);
static void write_pipe(cupsd_client_t *con);
/*
* 'cupsdAcceptClient()' - Accept a new client.
*/
void
cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
{
int count; /* Count of connections on a host */
int val; /* Parameter value */
cupsd_client_t *con, /* New client pointer */
*tempcon; /* Temporary client pointer */
http_addrlist_t *addrlist, /* List of adddresses for host */
*addr; /* Current address */
socklen_t addrlen; /* Length of address */
char *hostname; /* Hostname for address */
http_addr_t temp; /* Temporary address variable */
static time_t last_dos = 0; /* Time of last DoS attack */
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdAcceptClient(lis=%p) %d Clients = %d",
lis, lis->fd, cupsArrayCount(Clients));
/*
* Make sure we don't have a full set of clients already...
*/
if (cupsArrayCount(Clients) == MaxClients)
return;
/*
* Get a pointer to the next available client...
*/
if (!Clients)
Clients = cupsArrayNew(NULL, NULL);
if (!Clients)
return;
con = calloc(1, sizeof(cupsd_client_t));
con->http.activity = time(NULL);
con->file = -1;
con->http.hostaddr = &(con->clientaddr);
/*
* Accept the client and get the remote address...
*/
addrlen = sizeof(http_addr_t);
if ((con->http.fd = accept(lis->fd, (struct sockaddr *)con->http.hostaddr,
&addrlen)) < 0)
{
if (errno == ENFILE || errno == EMFILE)
cupsdPauseListening();
cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to accept client connection - %s.",
strerror(errno));
free(con);
return;
}
#ifdef AF_INET6
if (lis->address.addr.sa_family == AF_INET6)
{
/*
* Save the connected port number...
*/
con->http.hostaddr->ipv6.sin6_port = lis->address.ipv6.sin6_port;
/*
* Convert IPv4 over IPv6 addresses (::ffff:n.n.n.n) to IPv4 forms we
* can more easily use...
*/
if (con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0] == 0 &&
con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1] == 0 &&
ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]) == 0xffff)
con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2] = 0;
}
else
#endif /* AF_INET6 */
if (lis->address.addr.sa_family == AF_INET)
con->http.hostaddr->ipv4.sin_port = lis->address.ipv4.sin_port;
/*
* Check the number of clients on the same address...
*/
for (count = 0, tempcon = (cupsd_client_t *)cupsArrayFirst(Clients);
tempcon;
tempcon = (cupsd_client_t *)cupsArrayNext(Clients))
if (httpAddrEqual(tempcon->http.hostaddr, con->http.hostaddr))
{
count ++;
if (count >= MaxClientsPerHost)
break;
}
if (count >= MaxClientsPerHost)
{
if ((time(NULL) - last_dos) >= 60)
{
last_dos = time(NULL);
cupsdLogMessage(CUPSD_LOG_WARN,
"Possible DoS attack - more than %d clients connecting "
"from %s!",
MaxClientsPerHost, tempcon->http.hostname);
}
#ifdef WIN32
closesocket(con->http.fd);
#else
close(con->http.fd);
#endif /* WIN32 */
free(con);
return;
}
/*
* Get the hostname or format the IP address as needed...
*/
if (httpAddrLocalhost(con->http.hostaddr))
{
/*
* Map accesses from the loopback interface to "localhost"...
*/
strlcpy(con->http.hostname, "localhost", sizeof(con->http.hostname));
hostname = con->http.hostname;
}
else
{
/*
* Map accesses from the same host to the server name.
*/
for (addr = ServerAddrs; addr; addr = addr->next)
if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
break;
if (addr)
{
strlcpy(con->http.hostname, ServerName, sizeof(con->http.hostname));
hostname = con->http.hostname;
}
else if (HostNameLookups)
hostname = httpAddrLookup(con->http.hostaddr, con->http.hostname,
sizeof(con->http.hostname));
else
{
hostname = NULL;
httpAddrString(con->http.hostaddr, con->http.hostname,
sizeof(con->http.hostname));
}
}
if (hostname == NULL && HostNameLookups == 2)
{
/*
* Can't have an unresolved IP address with double-lookups enabled...
*/
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdAcceptClient: Closing connection %d...",
con->http.fd);
#ifdef WIN32
closesocket(con->http.fd);
#else
close(con->http.fd);
#endif /* WIN32 */
cupsdLogMessage(CUPSD_LOG_WARN,
"Name lookup failed - connection from %s closed!",
con->http.hostname);
free(con);
return;
}
if (HostNameLookups == 2)
{
/*
* Do double lookups as needed...
*/
if ((addrlist = httpAddrGetList(con->http.hostname, AF_UNSPEC, NULL)) != NULL)
{
/*
* See if the hostname maps to the same IP address...
*/
for (addr = addrlist; addr; addr = addr->next)
if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
break;
}
else
addr = NULL;
httpAddrFreeList(addrlist);
if (!addr)
{
/*
* Can't have a hostname that doesn't resolve to the same IP address
* with double-lookups enabled...
*/
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdAcceptClient: Closing connection %d...",
con->http.fd);
#ifdef WIN32
closesocket(con->http.fd);
#else
close(con->http.fd);
#endif /* WIN32 */
cupsdLogMessage(CUPSD_LOG_WARN,
"IP lookup failed - connection from %s closed!",
con->http.hostname);
free(con);
return;
}
}
#ifdef AF_INET6
if (con->http.hostaddr->addr.sa_family == AF_INET6)
cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv6)",
con->http.fd, con->http.hostname,
ntohs(con->http.hostaddr->ipv6.sin6_port));
else
#endif /* AF_INET6 */
#ifdef AF_LOCAL
if (con->http.hostaddr->addr.sa_family == AF_LOCAL)
cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s (Domain)",
con->http.fd, con->http.hostname);
else
#endif /* AF_LOCAL */
cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv4)",
con->http.fd, con->http.hostname,
ntohs(con->http.hostaddr->ipv4.sin_port));
/*
* Get the local address the client connected to...
*/
addrlen = sizeof(temp);
if (getsockname(con->http.fd, (struct sockaddr *)&temp, &addrlen))
{
cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get local address - %s",
strerror(errno));
strcpy(con->servername, "localhost");
con->serverport = LocalPort;
}
else
{
#ifdef AF_INET6
if (temp.addr.sa_family == AF_INET6)
{
httpAddrLookup(&temp, con->servername, sizeof(con->servername));
con->serverport = ntohs(lis->address.ipv6.sin6_port);
}
else
#endif /* AF_INET6 */
if (temp.addr.sa_family == AF_INET)
{
httpAddrLookup(&temp, con->servername, sizeof(con->servername));
con->serverport = ntohs(lis->address.ipv4.sin_port);
}
else
{
strcpy(con->servername, "localhost");
con->serverport = LocalPort;
}
}
cupsArrayAdd(Clients, con);
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdAcceptClient: %d connected to server on %s:%d",
con->http.fd, con->servername, con->serverport);
/*
* Using TCP_NODELAY improves responsiveness, especially on systems
* with a slow loopback interface... Since we write large buffers
* when sending print files and requests, there shouldn't be any
* performance penalty for this...
*/
val = 1;
setsockopt(con->http.fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
/*
* Close this file on all execs...
*/
fcntl(con->http.fd, F_SETFD, fcntl(con->http.fd, F_GETFD) | FD_CLOEXEC);
/*
* Add the socket to the select() input mask.
*/
cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
/*
* Temporarily suspend accept()'s until we lose a client...
*/
if (cupsArrayCount(Clients) == MaxClients)
cupsdPauseListening();
#ifdef HAVE_SSL
/*
* See if we are connecting on a secure port...
*/
if (lis->encryption == HTTP_ENCRYPT_ALWAYS)
{
/*
* https connection; go secure...
*/
con->http.encryption = HTTP_ENCRYPT_ALWAYS;
if (!encrypt_client(con))
cupsdCloseClient(con);
}
else
con->auto_ssl = 1;
#endif /* HAVE_SSL */
}
/*
* 'cupsdCloseAllClients()' - Close all remote clients immediately.
*/
void
cupsdCloseAllClients(void)
{
cupsd_client_t *con; /* Current client */
for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
con;
con = (cupsd_client_t *)cupsArrayNext(Clients))
cupsdCloseClient(con);
}
/*
* 'cupsdCloseClient()' - Close a remote client.
*/
int /* O - 1 if partial close, 0 if fully closed */
cupsdCloseClient(cupsd_client_t *con) /* I - Client to close */
{
int partial; /* Do partial close for SSL? */
#ifdef HAVE_LIBSSL
SSL_CTX *context; /* Context for encryption */
SSL *conn; /* Connection for encryption */
unsigned long error; /* Error code */
#elif defined(HAVE_GNUTLS)
http_tls_t *conn; /* TLS connection information */
int error; /* Error code */
gnutls_certificate_server_credentials *credentials;
/* TLS credentials */
# elif defined(HAVE_CDSASSL)
http_tls_t *conn; /* CDSA connection information */
#endif /* HAVE_LIBSSL */
cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdCloseClient: %d", con->http.fd);
/*
* Flush pending writes before closing...
*/
httpFlushWrite(HTTP(con));
partial = 0;
#ifdef HAVE_SSL
/*
* Shutdown encryption as needed...
*/
if (con->http.tls)
{
partial = 1;
# ifdef HAVE_LIBSSL
conn = (SSL *)(con->http.tls);
context = SSL_get_SSL_CTX(conn);
switch (SSL_shutdown(conn))
{
case 1 :
cupsdLogMessage(CUPSD_LOG_INFO,
"cupsdCloseClient: SSL shutdown successful!");
break;
case -1 :
cupsdLogMessage(CUPSD_LOG_ERROR,
"cupsdCloseClient: Fatal error during SSL shutdown!");
default :
while ((error = ERR_get_error()) != 0)
cupsdLogMessage(CUPSD_LOG_ERROR, "cupsdCloseClient: %s",
ERR_error_string(error, NULL));
break;
}
SSL_CTX_free(context);
SSL_free(conn);
# elif defined(HAVE_GNUTLS)
conn = (http_tls_t *)(con->http.tls);
credentials = (gnutls_certificate_server_credentials *)(conn->credentials);
error = gnutls_bye(conn->session, GNUTLS_SHUT_WR);
switch (error)
{
case GNUTLS_E_SUCCESS:
cupsdLogMessage(CUPSD_LOG_INFO,
"cupsdCloseClient: SSL shutdown successful!");
break;
default:
cupsdLogMessage(CUPSD_LOG_ERROR,
"cupsdCloseClient: %s", gnutls_strerror(error));
break;
}
gnutls_deinit(conn->session);
gnutls_certificate_free_credentials(*credentials);
free(credentials);
free(conn);
# elif defined(HAVE_CDSASSL)
conn = (http_tls_t *)(con->http.tls);
while (SSLClose(conn->session) == errSSLWouldBlock)
usleep(1000);
SSLDisposeContext(conn->session);
if (conn->certsArray)
CFRelease(conn->certsArray);
free(conn);
# endif /* HAVE_LIBSSL */
con->http.tls = NULL;
}
#endif /* HAVE_SSL */
if (con->pipe_pid != 0)
{
/*
* Stop any CGI process...
*/
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdCloseClient: %d Killing process ID %d...",
con->http.fd, con->pipe_pid);
cupsdEndProcess(con->pipe_pid, 1);
con->pipe_pid = 0;
}
if (con->file >= 0)
{
cupsdRemoveSelect(con->file);
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdCloseClient: %d Closing data file %d.",
con->http.fd, con->file);
close(con->file);
con->file = -1;
}
/*
* Close the socket and clear the file from the input set for select()...
*/
if (con->http.fd > 0)
{
if (partial)
{
/*
* Only do a partial close so that the encrypted client gets everything.
*/
shutdown(con->http.fd, 0);
cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
}
else
{
/*
* Shut the socket down fully...
*/
cupsdRemoveSelect(con->http.fd);
close(con->http.fd);
con->http.fd = -1;
}
}
if (!partial)
{
/*
* Free memory...
*/
if (con->http.input_set)
free(con->http.input_set);
httpClearCookie(HTTP(con));
cupsdClearString(&con->filename);
cupsdClearString(&con->command);
cupsdClearString(&con->options);
cupsdClearString(&con->query_string);
if (con->request)
{
ippDelete(con->request);
con->request = NULL;
}
if (con->response)
{
ippDelete(con->response);
con->response = NULL;
}
if (con->language)
{
cupsLangFree(con->language);
con->language = NULL;
}
#ifdef HAVE_AUTHORIZATION_H
if (con->authref)
{
AuthorizationFree(con->authref, kAuthorizationFlagDefaults);
con->authref = NULL;
}
#endif /* HAVE_AUTHORIZATION_H */
/*
* Re-enable new client connections if we are going back under the
* limit...
*/
if (cupsArrayCount(Clients) == MaxClients)
cupsdResumeListening();
/*
* Compact the list of clients as necessary...
*/
cupsArrayRemove(Clients, con);
free(con);
}
return (partial);
}
/*
* 'cupsdFlushHeader()' - Flush the header fields to the client.
*/
int /* I - Bytes written or -1 on error */
cupsdFlushHeader(cupsd_client_t *con) /* I - Client to flush to */
{
int bytes = httpFlushWrite(HTTP(con));
con->http.data_encoding = HTTP_ENCODE_LENGTH;
return (bytes);
}
/*
* 'cupsdReadClient()' - Read data from a client.
*/
void
cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */
{
char line[32768], /* Line from client... */
operation[64], /* Operation code from socket */
version[64], /* HTTP version number string */
locale[64], /* Locale */
*ptr; /* Pointer into strings */
int major, minor; /* HTTP version numbers */
http_status_t status; /* Transfer status */
ipp_state_t ipp_state; /* State of IPP transfer */
int bytes; /* Number of bytes to POST */
char *filename; /* Name of file for GET/HEAD */
char buf[1024]; /* Buffer for real filename */
struct stat filestats; /* File information */
mime_type_t *type; /* MIME type of file */
cupsd_printer_t *p; /* Printer */
static unsigned request_id = 0; /* Request ID for temp files */
status = HTTP_CONTINUE;
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: %d, used=%d, file=%d state=%d",
con->http.fd, con->http.used, con->file, con->http.state);
if (con->http.error)
{
cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: http error seen...");
cupsdCloseClient(con);
return;
}
#ifdef HAVE_SSL
if (con->auto_ssl)
{
/*
* Automatically check for a SSL/TLS handshake...
*/
con->auto_ssl = 0;
if (recv(con->http.fd, buf, 1, MSG_PEEK) == 1 &&
(!buf[0] || !strchr("DGHOPT", buf[0])))
{
/*
* Encrypt this connection...
*/
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: Saw first byte %02X, auto-negotiating SSL/TLS session...",
buf[0] & 255);
if (!encrypt_client(con))
cupsdCloseClient(con);
return;
}
}
#endif /* HAVE_SSL */
switch (con->http.state)
{
case HTTP_WAITING :
/*
* See if we've received a request line...
*/
if (httpGets(line, sizeof(line) - 1, HTTP(con)) == NULL)
{
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: httpGets returned EOF...");
cupsdCloseClient(con);
return;
}
/*
* Ignore blank request lines...
*/
if (line[0] == '\0')
break;
/*
* Clear other state variables...
*/
httpClearFields(HTTP(con));
con->http.activity = time(NULL);
con->http.version = HTTP_1_0;
con->http.keep_alive = HTTP_KEEPALIVE_OFF;
con->http.data_encoding = HTTP_ENCODE_LENGTH;
con->http.data_remaining = 0;
con->http._data_remaining = 0;
con->operation = HTTP_WAITING;
con->bytes = 0;
con->file = -1;
con->file_ready = 0;
con->pipe_pid = 0;
con->username[0] = '\0';
con->password[0] = '\0';
con->uri[0] = '\0';
cupsdClearString(&con->command);
cupsdClearString(&con->options);
cupsdClearString(&con->query_string);
if (con->request)
{
ippDelete(con->request);
con->request = NULL;
}
if (con->response)
{
ippDelete(con->response);
con->response = NULL;
}
if (con->language)
{
cupsLangFree(con->language);
con->language = NULL;
}
#ifdef HAVE_GSSAPI
con->gss_have_creds = 0;
#endif /* HAVE_GSSAPI */
/*
* Grab the request line...
*/
switch (sscanf(line, "%63s%1023s%63s", operation, con->uri, version))
{
case 1 :
cupsdLogMessage(CUPSD_LOG_ERROR,
"Bad request line \"%s\" from %s!", line,
con->http.hostname);
cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE);
cupsdCloseClient(con);
return;
case 2 :
con->http.version = HTTP_0_9;
break;
case 3 :
if (sscanf(version, "HTTP/%d.%d", &major, &minor) != 2)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Bad request line \"%s\" from %s!", line,
con->http.hostname);
cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE);
cupsdCloseClient(con);
return;
}
if (major < 2)
{
con->http.version = (http_version_t)(major * 100 + minor);
if (con->http.version == HTTP_1_1 && KeepAlive)
con->http.keep_alive = HTTP_KEEPALIVE_ON;
else
con->http.keep_alive = HTTP_KEEPALIVE_OFF;
}
else
{
cupsdSendError(con, HTTP_NOT_SUPPORTED, AUTH_NONE);
cupsdCloseClient(con);
return;
}
break;
}
/*
* Handle full URLs in the request line...
*/
if (strcmp(con->uri, "*"))
{
char method[HTTP_MAX_URI], /* Method/scheme */
userpass[HTTP_MAX_URI], /* Username:password */
hostname[HTTP_MAX_URI], /* Hostname */
resource[HTTP_MAX_URI]; /* Resource path */
int port; /* Port number */
/*
* Separate the URI into its components...
*/
httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
method, sizeof(method),
userpass, sizeof(userpass),
hostname, sizeof(hostname), &port,
resource, sizeof(resource));
/*
* Only allow URIs with the servername, localhost, or an IP
* address...
*/
if (strcmp(method, "file") &&
strcasecmp(hostname, ServerName) &&
strcasecmp(hostname, "localhost") &&
!isdigit(hostname[0]))
{
/*
* Nope, we don't do proxies...
*/
cupsdLogMessage(CUPSD_LOG_ERROR, "Bad URI \"%s\" in request!",
con->uri);
cupsdSendError(con, HTTP_METHOD_NOT_ALLOWED, AUTH_NONE);
cupsdCloseClient(con);
return;
}
/*
* Copy the resource portion back into the URI; both resource and
* con->uri are HTTP_MAX_URI bytes in size...
*/
strcpy(con->uri, resource);
}
/*
* Process the request...
*/
if (!strcmp(operation, "GET"))
con->http.state = HTTP_GET;
else if (!strcmp(operation, "PUT"))
con->http.state = HTTP_PUT;
else if (!strcmp(operation, "POST"))
con->http.state = HTTP_POST;
else if (!strcmp(operation, "DELETE"))
con->http.state = HTTP_DELETE;
else if (!strcmp(operation, "TRACE"))
con->http.state = HTTP_TRACE;
else if (!strcmp(operation, "OPTIONS"))
con->http.state = HTTP_OPTIONS;
else if (!strcmp(operation, "HEAD"))
con->http.state = HTTP_HEAD;
else
{
cupsdLogMessage(CUPSD_LOG_ERROR, "Bad operation \"%s\"!", operation);
cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE);
cupsdCloseClient(con);
return;
}
con->start = time(NULL);
con->operation = con->http.state;
cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdReadClient: %d %s %s HTTP/%d.%d",
con->http.fd, operation, con->uri,
con->http.version / 100, con->http.version % 100);
con->http.status = HTTP_OK;
case HTTP_OPTIONS :
case HTTP_DELETE :
case HTTP_GET :
case HTTP_HEAD :
case HTTP_POST :
case HTTP_PUT :
case HTTP_TRACE :
/*
* Parse incoming parameters until the status changes...
*/
while ((status = httpUpdate(HTTP(con))) == HTTP_CONTINUE)
if (con->http.used == 0 ||
!memchr(con->http.buffer, '\n', con->http.used))
break;
if (status != HTTP_OK && status != HTTP_CONTINUE)
{
cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE);
cupsdCloseClient(con);
return;
}
break;
default :
break; /* Anti-compiler-warning-code */
}
/*
* Handle new transfers...
*/
if (status == HTTP_OK)
{
if (con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE][0])
{
/*
* Figure out the locale from the Accept-Language and Content-Type
* fields...
*/
if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ',')) != NULL)
*ptr = '\0';
if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ';')) != NULL)
*ptr = '\0';
if ((ptr = strstr(con->http.fields[HTTP_FIELD_CONTENT_TYPE], "charset=")) != NULL)
{
/*
* Combine language and charset, and trim any extra params in the
* content-type.
*/
snprintf(locale, sizeof(locale), "%s.%s",
con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ptr + 8);
if ((ptr = strchr(locale, ',')) != NULL)
*ptr = '\0';
}
else
snprintf(locale, sizeof(locale), "%s.%s",
con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], DefaultCharset);
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: %d Browser asked for language \"%s\"...",
con->http.fd, locale);
con->language = cupsLangGet(locale);
}
else
con->language = cupsLangGet(DefaultLocale);
cupsdAuthorize(con);
if (!strncmp(con->http.fields[HTTP_FIELD_CONNECTION], "Keep-Alive", 10) &&
KeepAlive)
con->http.keep_alive = HTTP_KEEPALIVE_ON;
if (!con->http.fields[HTTP_FIELD_HOST][0] &&
con->http.version >= HTTP_1_1)
{
/*
* HTTP/1.1 and higher require the "Host:" field...
*/
if (!cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
}
else if (con->operation == HTTP_OPTIONS)
{
/*
* Do OPTIONS command...
*/
if (con->best && con->best->type != AUTH_NONE)
{
if (!cupsdSendHeader(con, HTTP_UNAUTHORIZED, NULL, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
}
if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
con->http.tls == NULL)
{
#ifdef HAVE_SSL
/*
* Do encryption stuff...
*/
if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
httpPrintf(HTTP(con), "Content-Length: 0\r\n");
httpPrintf(HTTP(con), "\r\n");
if (cupsdFlushHeader(con) < 0)
{
cupsdCloseClient(con);
return;
}
if (!encrypt_client(con))
{
cupsdCloseClient(con);
return;
}
#else
if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
#endif /* HAVE_SSL */
}
if (!cupsdSendHeader(con, HTTP_OK, NULL, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n");
httpPrintf(HTTP(con), "Content-Length: 0\r\n");
httpPrintf(HTTP(con), "\r\n");
if (cupsdFlushHeader(con) < 0)
{
cupsdCloseClient(con);
return;
}
}
else if (!is_path_absolute(con->uri))
{
/*
* Protect against malicious users!
*/
if (!cupsdSendError(con, HTTP_FORBIDDEN, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
}
else
{
if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
con->http.tls == NULL)
{
#ifdef HAVE_SSL
/*
* Do encryption stuff...
*/
if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
httpPrintf(HTTP(con), "Content-Length: 0\r\n");
httpPrintf(HTTP(con), "\r\n");
if (cupsdFlushHeader(con) < 0)
{
cupsdCloseClient(con);
return;
}
if (!encrypt_client(con))
{
cupsdCloseClient(con);
return;
}
#else
if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
#endif /* HAVE_SSL */
}
if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_OK)
{
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: Unauthorized request for %s...\n",
con->uri);
cupsdSendError(con, status, AUTH_NONE);
cupsdCloseClient(con);
return;
}
if (con->http.expect &&
(con->operation == HTTP_POST || con->operation == HTTP_PUT))
{
if (con->http.expect == HTTP_CONTINUE)
{
/*
* Send 100-continue header...
*/
if (!cupsdSendHeader(con, HTTP_CONTINUE, NULL, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
}
else
{
/*
* Send 417-expectation-failed header...
*/
if (!cupsdSendHeader(con, HTTP_EXPECTATION_FAILED, NULL, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
httpPrintf(HTTP(con), "Content-Length: 0\r\n");
httpPrintf(HTTP(con), "\r\n");
if (cupsdFlushHeader(con) < 0)
{
cupsdCloseClient(con);
return;
}
}
}
switch (con->http.state)
{
case HTTP_GET_SEND :
if (!strncmp(con->uri, "/printers/", 10) &&
!strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
{
/*
* Send PPD file - get the real printer name since printer
* names are not case sensitive but filenames can be...
*/
con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
else
{
if (!cupsdSendError(con, HTTP_NOT_FOUND, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
break;
}
}
if ((!strncmp(con->uri, "/admin", 6) &&
strncmp(con->uri, "/admin/conf/", 12) &&
strncmp(con->uri, "/admin/log/", 11)) ||
!strncmp(con->uri, "/printers", 9) ||
!strncmp(con->uri, "/classes", 8) ||
!strncmp(con->uri, "/help", 5) ||
!strncmp(con->uri, "/jobs", 5))
{
/*
* Send CGI output...
*/
if (!strncmp(con->uri, "/admin", 6))
{
cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
ServerBin);
cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
}
else if (!strncmp(con->uri, "/printers", 9))
{
cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
ServerBin);
if (con->uri[9] && con->uri[10])
cupsdSetString(&con->options, con->uri + 9);
else
cupsdSetString(&con->options, NULL);
}
else if (!strncmp(con->uri, "/classes", 8))
{
cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
ServerBin);
if (con->uri[8] && con->uri[9])
cupsdSetString(&con->options, con->uri + 8);
else
cupsdSetString(&con->options, NULL);
}
else if (!strncmp(con->uri, "/jobs", 5))
{
cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
ServerBin);
if (con->uri[5] && con->uri[6])
cupsdSetString(&con->options, con->uri + 5);
else
cupsdSetString(&con->options, NULL);
}
else
{
cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
ServerBin);
if (con->uri[5] && con->uri[6])
cupsdSetString(&con->options, con->uri + 5);
else
cupsdSetString(&con->options, NULL);
}
if (!cupsdSendCommand(con, con->command, con->options, 0))
{
if (!cupsdSendError(con, HTTP_NOT_FOUND, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
}
else
cupsdLogRequest(con, HTTP_OK);
if (con->http.version <= HTTP_1_0)
con->http.keep_alive = HTTP_KEEPALIVE_OFF;
}
else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
(strchr(con->uri + 12, '/') ||
strlen(con->uri) == 12)) ||
(!strncmp(con->uri, "/admin/log/", 11) &&
(strchr(con->uri + 11, '/') ||
strlen(con->uri) == 11)))
{
/*
* GET can only be done to configuration files under
* /admin/conf...
*/
if (!cupsdSendError(con, HTTP_FORBIDDEN, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
break;
}
else
{
/*
* Serve a file...
*/
if ((filename = get_file(con, &filestats, buf,
sizeof(buf))) == NULL)
{
if (!cupsdSendError(con, HTTP_NOT_FOUND, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
break;
}
type = mimeFileType(MimeDatabase, filename, NULL, NULL);
if (is_cgi(con, filename, &filestats, type))
{
/*
* Note: con->command and con->options were set by
* is_cgi()...
*/
if (!cupsdSendCommand(con, con->command, con->options, 0))
{
if (!cupsdSendError(con, HTTP_NOT_FOUND, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
}
else
cupsdLogRequest(con, HTTP_OK);
if (con->http.version <= HTTP_1_0)
con->http.keep_alive = HTTP_KEEPALIVE_OFF;
break;
}
if (!check_if_modified(con, &filestats))
{
if (!cupsdSendError(con, HTTP_NOT_MODIFIED, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
}
else
{
if (type == NULL)
strcpy(line, "text/plain");
else
snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
if (!write_file(con, HTTP_OK, filename, line, &filestats))
{
cupsdCloseClient(con);
return;
}
}
}
break;
case HTTP_POST_RECV :
/*
* See if the POST request includes a Content-Length field, and if
* so check the length against any limits that are set...
*/
cupsdLogMessage(CUPSD_LOG_DEBUG2, "POST %s", con->uri);
cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
MaxRequestSize > 0 &&
con->http.data_remaining > MaxRequestSize)
{
/*
* Request too large...
*/
if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
break;
}
else if (con->http.data_remaining < 0)
{
/*
* Negative content lengths are invalid!
*/
if (!cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
break;
}
/*
* See what kind of POST request this is; for IPP requests the
* content-type field will be "application/ipp"...
*/
if (!strcmp(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
"application/ipp"))
con->request = ippNew();
else if ((!strncmp(con->uri, "/admin", 6) &&
strncmp(con->uri, "/admin/conf/", 12) &&
strncmp(con->uri, "/admin/log/", 11)) ||
!strncmp(con->uri, "/printers", 9) ||
!strncmp(con->uri, "/classes", 8) ||
!strncmp(con->uri, "/help", 5) ||
!strncmp(con->uri, "/jobs", 5))
{
/*
* CGI request...
*/
if (!strncmp(con->uri, "/admin", 6))
{
cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
ServerBin);
cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
}
else if (!strncmp(con->uri, "/printers", 9))
{
cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
ServerBin);
if (con->uri[9] && con->uri[10])
cupsdSetString(&con->options, con->uri + 9);
else
cupsdSetString(&con->options, NULL);
}
else if (!strncmp(con->uri, "/classes", 8))
{
cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
ServerBin);
if (con->uri[8] && con->uri[9])
cupsdSetString(&con->options, con->uri + 8);
else
cupsdSetString(&con->options, NULL);
}
else if (!strncmp(con->uri, "/jobs", 5))
{
cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
ServerBin);
if (con->uri[5] && con->uri[6])
cupsdSetString(&con->options, con->uri + 5);
else
cupsdSetString(&con->options, NULL);
}
else
{
cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
ServerBin);
if (con->uri[5] && con->uri[6])
cupsdSetString(&con->options, con->uri + 5);
else
cupsdSetString(&con->options, NULL);
}
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: %d command=\"%s\", "
"options = \"%s\"",
con->http.fd, con->command,
con->options ? con->options : "(null)");
if (con->http.version <= HTTP_1_0)
con->http.keep_alive = HTTP_KEEPALIVE_OFF;
}
else
{
/*
* POST to a file...
*/
if ((filename = get_file(con, &filestats, buf,
sizeof(buf))) == NULL)
{
if (!cupsdSendError(con, HTTP_NOT_FOUND, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
break;
}
type = mimeFileType(MimeDatabase, filename, NULL, NULL);
if (!is_cgi(con, filename, &filestats, type))
{
/*
* Only POST to CGI's...
*/
if (!cupsdSendError(con, HTTP_UNAUTHORIZED, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
}
}
break;
case HTTP_PUT_RECV :
/*
* Validate the resource name...
*/
if (strncmp(con->uri, "/admin/conf/", 12) ||
strchr(con->uri + 12, '/') ||
strlen(con->uri) == 12)
{
/*
* PUT can only be done to configuration files under
* /admin/conf...
*/
if (!cupsdSendError(con, HTTP_FORBIDDEN, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
break;
}
/*
* See if the PUT request includes a Content-Length field, and if
* so check the length against any limits that are set...
*/
cupsdLogMessage(CUPSD_LOG_DEBUG2, "PUT %s", con->uri);
cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
MaxRequestSize > 0 &&
con->http.data_remaining > MaxRequestSize)
{
/*
* Request too large...
*/
if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
break;
}
else if (con->http.data_remaining < 0)
{
/*
* Negative content lengths are invalid!
*/
if (!cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
break;
}
/*
* Open a temporary file to hold the request...
*/
cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
request_id ++);
con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
con->filename, con->file);
if (con->file < 0)
{
if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
}
fchmod(con->file, 0640);
fchown(con->file, RunUser, Group);
fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
break;
case HTTP_DELETE :
case HTTP_TRACE :
cupsdSendError(con, HTTP_NOT_IMPLEMENTED, AUTH_NONE);
cupsdCloseClient(con);
return;
case HTTP_HEAD :
if (!strncmp(con->uri, "/printers/", 10) &&
!strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
{
/*
* Send PPD file - get the real printer name since printer
* names are not case sensitive but filenames can be...
*/
con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
else
{
if (!cupsdSendError(con, HTTP_NOT_FOUND, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
break;
}
}
if ((!strncmp(con->uri, "/admin", 6) &&
strncmp(con->uri, "/admin/conf/", 12) &&
strncmp(con->uri, "/admin/log/", 11)) ||
!strncmp(con->uri, "/printers", 9) ||
!strncmp(con->uri, "/classes", 8) ||
!strncmp(con->uri, "/help", 5) ||
!strncmp(con->uri, "/jobs", 5))
{
/*
* CGI output...
*/
if (!cupsdSendHeader(con, HTTP_OK, "text/html", AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
if (httpPrintf(HTTP(con), "\r\n") < 0)
{
cupsdCloseClient(con);
return;
}
if (cupsdFlushHeader(con) < 0)
{
cupsdCloseClient(con);
return;
}
cupsdLogRequest(con, HTTP_OK);
}
else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
(strchr(con->uri + 12, '/') ||
strlen(con->uri) == 12)) ||
(!strncmp(con->uri, "/admin/log/", 11) &&
(strchr(con->uri + 11, '/') ||
strlen(con->uri) == 11)))
{
/*
* HEAD can only be done to configuration files under
* /admin/conf...
*/
if (!cupsdSendError(con, HTTP_FORBIDDEN, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
break;
}
else if ((filename = get_file(con, &filestats, buf,
sizeof(buf))) == NULL)
{
if (!cupsdSendHeader(con, HTTP_NOT_FOUND, "text/html", AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
cupsdLogRequest(con, HTTP_NOT_FOUND);
}
else if (!check_if_modified(con, &filestats))
{
if (!cupsdSendError(con, HTTP_NOT_MODIFIED, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
cupsdLogRequest(con, HTTP_NOT_MODIFIED);
}
else
{
/*
* Serve a file...
*/
type = mimeFileType(MimeDatabase, filename, NULL, NULL);
if (type == NULL)
strcpy(line, "text/plain");
else
snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
if (!cupsdSendHeader(con, HTTP_OK, line, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
httpGetDateString(filestats.st_mtime)) < 0)
{
cupsdCloseClient(con);
return;
}
if (httpPrintf(HTTP(con), "Content-Length: %lu\r\n",
(unsigned long)filestats.st_size) < 0)
{
cupsdCloseClient(con);
return;
}
cupsdLogRequest(con, HTTP_OK);
}
if (httpPrintf(HTTP(con), "\r\n") < 0)
{
cupsdCloseClient(con);
return;
}
if (cupsdFlushHeader(con) < 0)
{
cupsdCloseClient(con);
return;
}
con->http.state = HTTP_WAITING;
break;
default :
break; /* Anti-compiler-warning-code */
}
}
}
/*
* Handle any incoming data...
*/
switch (con->http.state)
{
case HTTP_PUT_RECV :
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_%s, "
"con->data_remaining=" CUPS_LLFMT ", con->file=%d",
con->http.fd,
con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
"CHUNKED" : "LENGTH",
CUPS_LLCAST con->http.data_remaining, con->file);
do
{
if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
{
cupsdCloseClient(con);
return;
}
else if (bytes > 0)
{
con->bytes += bytes;
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: %d writing %d bytes to %d",
con->http.fd, bytes, con->file);
if (write(con->file, line, bytes) < bytes)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"cupsdReadClient: Unable to write %d bytes to %s: %s",
bytes, con->filename, strerror(errno));
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: Closing data file %d...",
con->file);
close(con->file);
con->file = -1;
unlink(con->filename);
cupsdClearString(&con->filename);
if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
}
}
}
while (con->http.state == HTTP_PUT_RECV && con->http.used > 0);
if (con->http.state == HTTP_WAITING)
{
/*
* End of file, see how big it is...
*/
fstat(con->file, &filestats);
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: %d Closing data file %d, size="
CUPS_LLFMT ".",
con->http.fd, con->file,
CUPS_LLCAST filestats.st_size);
close(con->file);
con->file = -1;
if (filestats.st_size > MaxRequestSize &&
MaxRequestSize > 0)
{
/*
* Request is too big; remove it and send an error...
*/
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: %d Removing temp file %s",
con->http.fd, con->filename);
unlink(con->filename);
cupsdClearString(&con->filename);
if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
}
/*
* Install the configuration file...
*/
status = install_conf_file(con);
/*
* Return the status to the client...
*/
if (!cupsdSendError(con, status, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
}
break;
case HTTP_POST_RECV :
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_"
"%s, con->data_remaining=" CUPS_LLFMT ", con->file=%d",
con->http.fd,
con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
"CHUNKED" : "LENGTH",
CUPS_LLCAST con->http.data_remaining, con->file);
do
{
if (con->request)
{
/*
* Grab any request data from the connection...
*/
if ((ipp_state = ippRead(&(con->http), con->request)) == IPP_ERROR)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"cupsdReadClient: %d IPP Read Error!",
con->http.fd);
cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE);
cupsdCloseClient(con);
return;
}
else if (ipp_state != IPP_DATA)
{
if (con->http.state == HTTP_POST_SEND)
{
cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE);
cupsdCloseClient(con);
return;
}
break;
}
else
con->bytes += ippLength(con->request);
}
if (con->file < 0 && con->http.state != HTTP_POST_SEND)
{
/*
* Create a file as needed for the request data...
*/
cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot, request_id ++);
con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
con->filename, con->file);
if (con->file < 0)
{
if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
}
fchmod(con->file, 0640);
fchown(con->file, RunUser, Group);
fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
}
if (con->http.state != HTTP_POST_SEND)
{
if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
{
cupsdCloseClient(con);
return;
}
else if (bytes > 0)
{
con->bytes += bytes;
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: %d writing %d bytes to %d",
con->http.fd, bytes, con->file);
if (write(con->file, line, bytes) < bytes)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"cupsdReadClient: Unable to write %d bytes to %s: %s",
bytes, con->filename, strerror(errno));
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: Closing file %d...",
con->file);
close(con->file);
con->file = -1;
unlink(con->filename);
cupsdClearString(&con->filename);
if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
}
}
else if (con->http.state == HTTP_POST_RECV)
return;
else if (con->http.state != HTTP_POST_SEND)
{
cupsdCloseClient(con);
return;
}
}
}
while (con->http.state == HTTP_POST_RECV && con->http.used > 0);
if (con->http.state == HTTP_POST_SEND)
{
if (con->file >= 0)
{
fstat(con->file, &filestats);
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: %d Closing data file %d, "
"size=" CUPS_LLFMT ".",
con->http.fd, con->file,
CUPS_LLCAST filestats.st_size);
close(con->file);
con->file = -1;
if (filestats.st_size > MaxRequestSize &&
MaxRequestSize > 0)
{
/*
* Request is too big; remove it and send an error...
*/
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: %d Removing temp file %s",
con->http.fd, con->filename);
unlink(con->filename);
cupsdClearString(&con->filename);
if (con->request)
{
/*
* Delete any IPP request data...
*/
ippDelete(con->request);
con->request = NULL;
}
if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
}
if (con->command)
{
if (!cupsdSendCommand(con, con->command, con->options, 0))
{
if (!cupsdSendError(con, HTTP_NOT_FOUND, AUTH_NONE))
{
cupsdCloseClient(con);
return;
}
}
else
cupsdLogRequest(con, HTTP_OK);
}
}
if (con->request)
{
cupsdProcessIPPRequest(con);
if (con->filename)
{
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdReadClient: %d Removing temp file %s",
con->http.fd, con->filename);
unlink(con->filename);
cupsdClearString(&con->filename);
}
return;
}
}
break;
default :
break; /* Anti-compiler-warning-code */
}
if (!con->http.keep_alive && con->http.state == HTTP_WAITING)
cupsdCloseClient(con);
}
/*
* 'cupsdSendCommand()' - Send output from a command via HTTP.
*/
int /* O - 1 on success, 0 on failure */
cupsdSendCommand(
cupsd_client_t *con, /* I - Client connection */
char *command, /* I - Command to run */
char *options, /* I - Command-line options */
int root) /* I - Run as root? */
{
int fd; /* Standard input file descriptor */
if (con->filename)
{
fd = open(con->filename, O_RDONLY);
if (fd < 0)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"cupsdSendCommand: %d Unable to open \"%s\" for reading: %s",
con->http.fd, con->filename ? con->filename : "/dev/null",
strerror(errno));
return (0);
}
fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
}
else
fd = -1;
con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
if (fd >= 0)
close(fd);
cupsdLogMessage(CUPSD_LOG_INFO, "Started \"%s\" (pid=%d)", command,
con->pipe_pid);
cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendCommand: %d file=%d",
con->http.fd, con->file);
if (con->pipe_pid == 0)
return (0);
fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
con->sent_header = 0;
con->file_ready = 0;
con->got_fields = 0;
con->field_col = 0;
return (1);
}
/*
* 'cupsdSendError()' - Send an error message via HTTP.
*/
int /* O - 1 if successful, 0 otherwise */
cupsdSendError(cupsd_client_t *con, /* I - Connection */
http_status_t code, /* I - Error code */
int auth_type)/* I - Authentication type */
{
#ifdef HAVE_SSL
/*
* Force client to upgrade for authentication if that is how the
* server is configured...
*/
if (code == HTTP_UNAUTHORIZED &&
DefaultEncryption == HTTP_ENCRYPT_REQUIRED &&
strcasecmp(con->http.hostname, "localhost") &&
!con->http.tls)
{
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdSendError: Encryption before authentication!");
code = HTTP_UPGRADE_REQUIRED;
}
#endif /* HAVE_SSL */
/*
* Put the request in the access_log file...
*/
cupsdLogRequest(con, code);
cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendError: %d code=%d (%s)",
con->http.fd, code, httpStatus(code));
/*
* To work around bugs in some proxies, don't use Keep-Alive for some
* error messages...
*
* Kerberos authentication doesn't work without Keep-Alive, so
* never disable it in that case.
*/
if (code >= HTTP_BAD_REQUEST && con->http.auth_type != AUTH_NEGOTIATE)
con->http.keep_alive = HTTP_KEEPALIVE_OFF;
/*
* Send an error message back to the client. If the error code is a
* 400 or 500 series, make sure the message contains some text, too!
*/
if (!cupsdSendHeader(con, code, NULL, auth_type))
return (0);
#ifdef HAVE_SSL
if (code == HTTP_UPGRADE_REQUIRED)
if (httpPrintf(HTTP(con), "Connection: Upgrade\r\n") < 0)
return (0);
if (httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n") < 0)
return (0);
#endif /* HAVE_SSL */
if (con->http.version >= HTTP_1_1 &&
con->http.keep_alive == HTTP_KEEPALIVE_OFF)
{
if (httpPrintf(HTTP(con), "Connection: close\r\n") < 0)
return (0);
}
if (code >= HTTP_BAD_REQUEST)
{
/*
* Send a human-readable error message.
*/
char message[4096], /* Message for user */
urltext[1024], /* URL redirection text */
redirect[1024]; /* Redirection link */
const char *text; /* Status-specific text */
redirect[0] = '\0';
if (code == HTTP_UNAUTHORIZED)
text = _cupsLangString(con->language,
_("Enter your username and password or the "
"root username and password to access this "
"page. If you are using Kerberos authentication, "
"make sure you have a valid Kerberos ticket."));
else if (code == HTTP_UPGRADE_REQUIRED)
{
text = urltext;
snprintf(urltext, sizeof(urltext),
_cupsLangString(con->language,
_("You must access this page using the URL "
"<A HREF=\"https://%s:%d%s\">"
"https://%s:%d%s</A>.")),
con->servername, con->serverport, con->uri,
con->servername, con->serverport, con->uri);
snprintf(redirect, sizeof(redirect),
"<META HTTP-EQUIV=\"Refresh\" "
"CONTENT=\"3;URL=https://%s:%d%s\">\n",
con->servername, con->serverport, con->uri);
}
else
text = "";
snprintf(message, sizeof(message),
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" "
"\"http://www.w3.org/TR/REC-html40/loose.dtd\">\n"
"<HTML>\n"
"<HEAD>\n"
"\t<META HTTP-EQUIV=\"Content-Type\" "
"CONTENT=\"text/html; charset=utf-8\">\n"
"\t<TITLE>%d %s</TITLE>\n"
"\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
"HREF=\"/cups.css\">\n"
"%s"
"</HEAD>\n"
"<BODY>\n"
"<H1>%d %s</H1>\n"
"<P>%s</P>\n"
"</BODY>\n"
"</HTML>\n",
code, httpStatus(code), redirect, code, httpStatus(code), text);
if (httpPrintf(HTTP(con), "Content-Type: text/html; charset=utf-8\r\n") < 0)
return (0);
if (httpPrintf(HTTP(con), "Content-Length: %d\r\n",
(int)strlen(message)) < 0)
return (0);
if (httpPrintf(HTTP(con), "\r\n") < 0)
return (0);
if (httpPrintf(HTTP(con), "%s", message) < 0)
return (0);
}
else if (httpPrintf(HTTP(con), "\r\n") < 0)
return (0);
if (cupsdFlushHeader(con) < 0)
return (0);
con->http.state = HTTP_WAITING;
return (1);
}
/*
* 'cupsdSendHeader()' - Send an HTTP request.
*/
int /* O - 1 on success, 0 on failure */
cupsdSendHeader(
cupsd_client_t *con, /* I - Client to send to */
http_status_t code, /* I - HTTP status code */
char *type, /* I - MIME type of document */
int auth_type) /* I - Type of authentication */
{
char auth_str[1024]; /* Authorization string */
/*
* Send the HTTP status header...
*/
if (code == HTTP_CONTINUE)
{
/*
* 100-continue doesn't send any headers...
*/
return (httpPrintf(HTTP(con), "HTTP/%d.%d 100 Continue\r\n\r\n",
con->http.version / 100, con->http.version % 100) > 0);
}
httpFlushWrite(HTTP(con));
con->http.data_encoding = HTTP_ENCODE_FIELDS;
if (httpPrintf(HTTP(con), "HTTP/%d.%d %d %s\r\n", con->http.version / 100,
con->http.version % 100, code, httpStatus(code)) < 0)
return (0);
if (httpPrintf(HTTP(con), "Date: %s\r\n", httpGetDateString(time(NULL))) < 0)
return (0);
if (ServerHeader)
if (httpPrintf(HTTP(con), "Server: %s\r\n", ServerHeader) < 0)
return (0);
if (con->http.keep_alive && con->http.version >= HTTP_1_0)
{
if (httpPrintf(HTTP(con), "Connection: Keep-Alive\r\n") < 0)
return (0);
if (httpPrintf(HTTP(con), "Keep-Alive: timeout=%d\r\n",
KeepAliveTimeout) < 0)
return (0);
}
if (code == HTTP_METHOD_NOT_ALLOWED)
if (httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST\r\n") < 0)
return (0);
if (code == HTTP_UNAUTHORIZED)
{
if (auth_type == AUTH_NONE)
{
if (!con->best || con->best->type <= AUTH_NONE)
auth_type = DefaultAuthType;
else
auth_type = con->best->type;
}
auth_str[0] = '\0';
if (auth_type == AUTH_BASIC || auth_type == AUTH_BASICDIGEST)
strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str));
else if (auth_type == AUTH_DIGEST)
snprintf(auth_str, sizeof(auth_str), "Digest realm=\"CUPS\", nonce=\"%s\"",
con->http.hostname);
#ifdef HAVE_GSSAPI
else if (auth_type == AUTH_NEGOTIATE && con->gss_output_token.length == 0)
strlcpy(auth_str, "Negotiate", sizeof(auth_str));
#endif /* HAVE_GSSAPI */
#ifdef HAVE_AUTHORIZATION_H
if (con->best && auth_type != AUTH_NEGOTIATE)
{
int i; /* Looping var */
char *auth_key; /* Auth key buffer */
size_t auth_size; /* Size of remaining buffer */
auth_key = auth_str + strlen(auth_str);
auth_size = sizeof(auth_str) - (auth_key - auth_str);
for (i = 0; i < con->best->num_names; i ++)
{
if (!strncasecmp(con->best->names[i], "@AUTHKEY(", 9))
{
snprintf(auth_key, auth_size, ", authkey=\"%s\"",
con->best->names[i] + 9);
/* end parenthesis is stripped in conf.c */
break;
}
else if (!strcasecmp(con->best->names[i], "@SYSTEM") &&
SystemGroupAuthKey)
{
snprintf(auth_key, auth_size, ", authkey=\"%s\"", SystemGroupAuthKey);
break;
}
}
}
#endif /* HAVE_AUTHORIZATION_H */
if (auth_str[0])
{
cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendHeader: WWW-Authenticate: %s",
auth_str);
if (httpPrintf(HTTP(con), "WWW-Authenticate: %s\r\n", auth_str) < 0)
return (0);
}
}
#ifdef HAVE_GSSAPI
/*
* WWW-Authenticate: Negotiate can be included even for
* non-401 replies...
*/
if (con->gss_output_token.length > 0)
{
char buf[2048]; /* Output token buffer */
OM_uint32 minor_status; /* Minor status code */
httpEncode64_2(buf, sizeof(buf),
con->gss_output_token.value,
con->gss_output_token.length);
gss_release_buffer(&minor_status, &con->gss_output_token);
cupsdLogMessage(CUPSD_LOG_DEBUG,
"cupsdSendHeader: WWW-Authenticate: Negotiate %s", buf);
if (httpPrintf(HTTP(con), "WWW-Authenticate: Negotiate %s\r\n", buf) < 0)
return (0);
}
#endif /* HAVE_GSSAPI */
if (con->language && strcmp(con->language->language, "C"))
{
if (httpPrintf(HTTP(con), "Content-Language: %s\r\n",
con->language->language) < 0)
return (0);
}
if (type)
{
if (!strcmp(type, "text/html"))
{
if (httpPrintf(HTTP(con),
"Content-Type: text/html; charset=utf-8\r\n") < 0)
return (0);
}
else if (httpPrintf(HTTP(con), "Content-Type: %s\r\n", type) < 0)
return (0);
}
return (1);
}
/*
* 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
*/
void
cupsdUpdateCGI(void)
{
char *ptr, /* Pointer to end of line in buffer */
message[1024]; /* Pointer to message text */
int loglevel; /* Log level for message */
while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel,
message, sizeof(message))) != NULL)
if (!strchr(CGIStatusBuffer->buffer, '\n'))
break;
if (ptr == NULL && !CGIStatusBuffer->bufused)
{
/*
* Fatal error on pipe - should never happen!
*/
cupsdLogMessage(CUPSD_LOG_CRIT,
"cupsdUpdateCGI: error reading from CGI error pipe - %s",
strerror(errno));
}
}
/*
* 'cupsdWriteClient()' - Write data to a client as needed.
*/
void
cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */
{
int bytes; /* Number of bytes written */
char buf[16385]; /* Data buffer */
char *bufptr; /* Pointer into buffer */
ipp_state_t ipp_state; /* IPP state value */
#ifdef DEBUG
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdWriteClient(con=%p) %d response=%p(%d), file=%d "
"pipe_pid=%d state=%d",
con, con->http.fd, con->response, con->response->state,
con->file, con->pipe_pid, con->http.state);
#endif /* DEBUG */
if (con->http.state != HTTP_GET_SEND &&
con->http.state != HTTP_POST_SEND)
return;
if (con->pipe_pid)
{
/*
* Make sure we select on the CGI output...
*/
cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
if (!con->file_ready)
{
/*
* Try again later when there is CGI output available...
*/
cupsdRemoveSelect(con->http.fd);
return;
}
con->file_ready = 0;
}
if (con->response && con->response->state != IPP_DATA)
{
ipp_state = ippWrite(HTTP(con), con->response);
bytes = ipp_state != IPP_ERROR &&
(con->file >= 0 || ipp_state != IPP_DATA);
}
else if ((bytes = read(con->file, buf, sizeof(buf) - 1)) > 0)
{
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdWriteClient: Read %d bytes from file %d...",
bytes, con->file);
if (con->pipe_pid && !con->got_fields)
{
/*
* Inspect the data for Content-Type and other fields.
*/
buf[bytes] = '\0';
for (bufptr = buf; !con->got_fields && *bufptr; bufptr ++)
if (*bufptr == '\n')
{
/*
* Send line to client...
*/
if (bufptr > buf && bufptr[-1] == '\r')
bufptr[-1] = '\0';
*bufptr++ = '\0';
cupsdLogMessage(CUPSD_LOG_DEBUG2, "Script header: %s", buf);
if (!con->sent_header)
{
/*
* Handle redirection and CGI status codes...
*/
if (!strncasecmp(buf, "Location:", 9))
{
cupsdSendHeader(con, HTTP_SEE_OTHER, NULL, AUTH_NONE);
con->sent_header = 2;
if (httpPrintf(HTTP(con), "Content-Length: 0\r\n") < 0)
return;
}
else if (!strncasecmp(buf, "Status:", 7))
{
cupsdSendError(con, (http_status_t)atoi(buf + 7), AUTH_NONE);
con->sent_header = 2;
}
else
{
cupsdSendHeader(con, HTTP_OK, NULL, AUTH_NONE);
con->sent_header = 1;
if (con->http.version == HTTP_1_1)
{
if (httpPrintf(HTTP(con), "Transfer-Encoding: chunked\r\n") < 0)
return;
}
}
}
if (strncasecmp(buf, "Status:", 7))
httpPrintf(HTTP(con), "%s\r\n", buf);
cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d %s",
con->http.fd, buf);
/*
* Update buffer...
*/
bytes -= (bufptr - buf);
memmove(buf, bufptr, bytes + 1);
bufptr = buf - 1;
/*
* See if the line was empty...
*/
if (con->field_col == 0)
{
con->got_fields = 1;
if (cupsdFlushHeader(con) < 0)
{
cupsdCloseClient(con);
return;
}
if (con->http.version == HTTP_1_1)
con->http.data_encoding = HTTP_ENCODE_CHUNKED;
}
else
con->field_col = 0;
}
else if (*bufptr != '\r')
con->field_col ++;
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdWriteClient: %d bytes=%d, got_fields=%d",
con->http.fd, bytes, con->got_fields);
if (bytes > 0 && !con->got_fields)
{
/*
* Remaining text needs to go out...
*/
httpPrintf(HTTP(con), "%s", buf);
con->http.activity = time(NULL);
return;
}
else if (bytes == 0)
con->http.activity = time(NULL);
}
if (bytes > 0)
{
if (httpWrite2(HTTP(con), buf, bytes) < 0)
{
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdWriteClient: %d Write of %d bytes failed!",
con->http.fd, bytes);
cupsdCloseClient(con);
return;
}
con->bytes += bytes;
if (con->http.state == HTTP_WAITING)
bytes = 0;
}
}
if (bytes <= 0)
{
cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d bytes < 0",
con->http.fd);
cupsdLogRequest(con, HTTP_OK);
httpFlushWrite(HTTP(con));
if (con->http.data_encoding == HTTP_ENCODE_CHUNKED && con->sent_header == 1)
{
if (httpWrite2(HTTP(con), "", 0) < 0)
{
cupsdCloseClient(con);
return;
}
}
con->http.state = HTTP_WAITING;
cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
if (con->file >= 0)
{
cupsdRemoveSelect(con->file);
if (con->pipe_pid)
cupsdEndProcess(con->pipe_pid, 0);
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdWriteClient: %d Closing data file %d.",
con->http.fd, con->file);
close(con->file);
con->file = -1;
con->pipe_pid = 0;
}
if (con->filename)
{
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdWriteClient: %d Removing temp file %s",
con->http.fd, con->filename);
unlink(con->filename);
cupsdClearString(&con->filename);
}
if (con->request)
{
ippDelete(con->request);
con->request = NULL;
}
if (con->response)
{
ippDelete(con->response);
con->response = NULL;
}
cupsdClearString(&con->command);
cupsdClearString(&con->options);
cupsdClearString(&con->query_string);
if (!con->http.keep_alive)
{
cupsdCloseClient(con);
return;
}
}
con->http.activity = time(NULL);
}
/*
* 'check_if_modified()' - Decode an "If-Modified-Since" line.
*/
static int /* O - 1 if modified since */
check_if_modified(
cupsd_client_t *con, /* I - Client connection */
struct stat *filestats) /* I - File information */
{
char *ptr; /* Pointer into field */
time_t date; /* Time/date value */
off_t size; /* Size/length value */
size = 0;
date = 0;
ptr = con->http.fields[HTTP_FIELD_IF_MODIFIED_SINCE];
if (*ptr == '\0')
return (1);
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"check_if_modified: %d If-Modified-Since=\"%s\"",
con->http.fd, ptr);
while (*ptr != '\0')
{
while (isspace(*ptr) || *ptr == ';')
ptr ++;
if (strncasecmp(ptr, "length=", 7) == 0)
{
ptr += 7;
size = strtoll(ptr, NULL, 10);
while (isdigit(*ptr))
ptr ++;
}
else if (isalpha(*ptr))
{
date = httpGetDateTime(ptr);
while (*ptr != '\0' && *ptr != ';')
ptr ++;
}
else
ptr ++;
}
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"check_if_modified: %d sizes=" CUPS_LLFMT ","
CUPS_LLFMT " dates=%d,%d",
con->http.fd, CUPS_LLCAST size,
CUPS_LLCAST filestats->st_size, (int)date,
(int)filestats->st_mtime);
return ((size != filestats->st_size && size != 0) ||
(date < filestats->st_mtime && date != 0) ||
(size == 0 && date == 0));
}
#ifdef HAVE_SSL
/*
* 'encrypt_client()' - Enable encryption for the client...
*/
static int /* O - 1 on success, 0 on error */
encrypt_client(cupsd_client_t *con) /* I - Client to encrypt */
{
# ifdef HAVE_LIBSSL
SSL_CTX *context; /* Context for encryption */
SSL *conn; /* Connection for encryption */
BIO *bio; /* BIO data */
unsigned long error; /* Error code */
/*
* Verify that we have a certificate...
*/
if (access(ServerKey, 0) || access(ServerCertificate, 0))
{
/*
* Nope, make a self-signed certificate...
*/
if (!make_certificate(con))
return (0);
}
/*
* Create the SSL context and accept the connection...
*/
context = SSL_CTX_new(SSLv23_server_method());
SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */
SSL_CTX_use_PrivateKey_file(context, ServerKey, SSL_FILETYPE_PEM);
SSL_CTX_use_certificate_file(context, ServerCertificate, SSL_FILETYPE_PEM);
bio = BIO_new(_httpBIOMethods());
BIO_ctrl(bio, BIO_C_SET_FILE_PTR, 0, (char *)HTTP(con));
conn = SSL_new(context);
SSL_set_bio(conn, bio, bio);
if (SSL_accept(conn) != 1)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"encrypt_client: Unable to encrypt connection from %s!",
con->http.hostname);
while ((error = ERR_get_error()) != 0)
cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
ERR_error_string(error, NULL));
SSL_CTX_free(context);
SSL_free(conn);
return (0);
}
cupsdLogMessage(CUPSD_LOG_DEBUG,
"encrypt_client: %d Connection from %s now encrypted.",
con->http.fd, con->http.hostname);
con->http.tls = conn;
return (1);
# elif defined(HAVE_GNUTLS)
http_tls_t *conn; /* TLS session object */
int error; /* Error code */
gnutls_certificate_server_credentials *credentials;
/* TLS credentials */
/*
* Verify that we have a certificate...
*/
if (access(ServerKey, 0) || access(ServerCertificate, 0))
{
/*
* Nope, make a self-signed certificate...
*/
if (!make_certificate(con))
return (0);
}
/*
* Create the SSL object and perform the SSL handshake...
*/
conn = (http_tls_t *)malloc(sizeof(http_tls_t));
if (conn == NULL)
return (0);
credentials = (gnutls_certificate_server_credentials *)
malloc(sizeof(gnutls_certificate_server_credentials));
if (credentials == NULL)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"encrypt_client: Unable to encrypt connection from %s!",
con->http.hostname);
cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s", strerror(errno));
free(conn);
return (0);
}
gnutls_certificate_allocate_credentials(credentials);
gnutls_certificate_set_x509_key_file(*credentials, ServerCertificate,
ServerKey, GNUTLS_X509_FMT_PEM);
gnutls_init(&(conn->session), GNUTLS_SERVER);
gnutls_set_default_priority(conn->session);
gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, *credentials);
gnutls_transport_set_ptr(conn->session, (gnutls_transport_ptr)HTTP(con));
gnutls_transport_set_pull_function(conn->session, _httpReadGNUTLS);
gnutls_transport_set_push_function(conn->session, _httpWriteGNUTLS);
error = gnutls_handshake(conn->session);
if (error != GNUTLS_E_SUCCESS)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"encrypt_client: Unable to encrypt connection from %s!",
con->http.hostname);
cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
gnutls_strerror(error));
gnutls_deinit(conn->session);
gnutls_certificate_free_credentials(*credentials);
free(conn);
free(credentials);
return (0);
}
cupsdLogMessage(CUPSD_LOG_DEBUG,
"encrypt_client: %d Connection from %s now encrypted.",
con->http.fd, con->http.hostname);
conn->credentials = credentials;
con->http.tls = conn;
return (1);
# elif defined(HAVE_CDSASSL)
OSStatus error; /* Error code */
http_tls_t *conn; /* CDSA connection information */
if ((conn = (http_tls_t *)malloc(sizeof(http_tls_t))) == NULL)
return (0);
error = 0;
conn->session = NULL;
conn->certsArray = get_cdsa_certificate(con);
if (!conn->certsArray)
{
/*
* No keychain (yet), make a self-signed certificate...
*/
if (make_certificate(con))
conn->certsArray = get_cdsa_certificate(con);
}
if (!conn->certsArray)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"encrypt_client: Could not find signing key in keychain "
"\"%s\"", ServerCertificate);
error = errSSLBadCert; /* errSSLBadConfiguration is a better choice, but not available on 10.2.x */
}
if (!error)
error = SSLNewContext(true, &conn->session);
if (!error)
error = SSLSetIOFuncs(conn->session, _httpReadCDSA, _httpWriteCDSA);
if (!error)
error = SSLSetProtocolVersionEnabled(conn->session, kSSLProtocol2, false);
if (!error)
error = SSLSetConnection(conn->session, HTTP(con));
if (!error)
error = SSLSetAllowsExpiredCerts(conn->session, true);
if (!error)
error = SSLSetAllowsAnyRoot(conn->session, true);
if (!error)
error = SSLSetCertificate(conn->session, conn->certsArray);
if (!error)
{
/*
* Perform SSL/TLS handshake
*/
while ((error = SSLHandshake(conn->session)) == errSSLWouldBlock)
usleep(1000);
}
if (error)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"encrypt_client: Unable to encrypt connection from %s!",
con->http.hostname);
cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s (%d)",
cssmErrorString(error), (int)error);
con->http.error = error;
con->http.status = HTTP_ERROR;
if (conn->session)
SSLDisposeContext(conn->session);
if (conn->certsArray)
CFRelease(conn->certsArray);
free(conn);
return (0);
}
cupsdLogMessage(CUPSD_LOG_DEBUG,
"encrypt_client: %d Connection from %s now encrypted.",
con->http.fd, con->http.hostname);
con->http.tls = conn;
return (1);
# endif /* HAVE_LIBSSL */
}
#endif /* HAVE_SSL */
#ifdef HAVE_CDSASSL
/*
* 'get_cdsa_certificate()' - Get a SSL/TLS certificate from the System keychain.
*/
static CFArrayRef /* O - Array of certificates */
get_cdsa_certificate(cupsd_client_t *con) /* I - Client connection */
{
OSStatus err; /* Error info */
SecKeychainRef keychain; /* Keychain reference */
SecIdentitySearchRef search; /* Search reference */
SecIdentityRef identity; /* Identity */
CFArrayRef certificates = NULL;
/* Certificate array */
if ((err = SecKeychainOpen(ServerCertificate, &keychain)))
{
cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot open keychain \"%s\", %s",
ServerCertificate, cssmErrorString(err));
return (NULL);
}
# if HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY
/*
* Use a policy to search for valid certificates who's common name matches the
* servername...
*/
SecPolicySearchRef policy_search; /* Policy search ref */
SecPolicyRef policy; /* Policy ref */
CSSM_DATA options; /* Policy options */
CSSM_APPLE_TP_SSL_OPTIONS
ssl_options; /* SSL Option for hostname */
if ((err = SecPolicySearchCreate(CSSM_CERT_X_509v3, &CSSMOID_APPLE_TP_SSL,
NULL, &policy_search)))
{
cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot create a policy search reference");
CFRelease(keychain);
return (NULL);
}
if ((err = SecPolicySearchCopyNext(policy_search, &policy)))
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Cannot find a policy to use for searching");
CFRelease(keychain);
CFRelease(policy_search);
return (NULL);
}
memset(&ssl_options, 0, sizeof(ssl_options));
ssl_options.Version = CSSM_APPLE_TP_SSL_OPTS_VERSION;
ssl_options.ServerName = con->servername;
ssl_options.ServerNameLen = strlen(con->servername);
options.Data = (uint8 *)&ssl_options;
options.Length = sizeof(ssl_options);
if ((err = SecPolicySetValue(policy, &options)))
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Cannot set policy value to use for searching");
CFRelease(keychain);
CFRelease(policy_search);
return (NULL);
}
err = SecIdentitySearchCreateWithPolicy(policy, NULL, CSSM_KEYUSE_SIGN,
keychain, FALSE, &search);
# else
/*
* Assume there is exactly one SecIdentity in the keychain...
*/
err = SecIdentitySearchCreate(keychain, CSSM_KEYUSE_SIGN, &search);
# endif /* HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY */
if (err)
cupsdLogMessage(CUPSD_LOG_DEBUG,
"Cannot create keychain search reference: %s",
cssmErrorString(err));
else
{
if ((err = SecIdentitySearchCopyNext(search, &identity)))
{
cupsdLogMessage(CUPSD_LOG_DEBUG,
"Cannot find signing key in keychain \"%s\", error %d",
ServerCertificate, (int)err);
}
else
{
if (CFGetTypeID(identity) != SecIdentityGetTypeID())
cupsdLogMessage(CUPSD_LOG_ERROR,
"SecIdentitySearchCopyNext CFTypeID failure!");
else
{
if ((certificates = CFArrayCreate(NULL, (const void **)&identity,
1, &kCFTypeArrayCallBacks)) == NULL)
cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot create certificate array");
}
CFRelease(identity);
}
CFRelease(search);
}
# if HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY
CFRelease(policy);
CFRelease(policy_search);
# endif /* HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY */
return (certificates);
}
#endif /* HAVE_CDSASSL */
/*
* 'get_file()' - Get a filename and state info.
*/
static char * /* O - Real filename */
get_file(cupsd_client_t *con, /* I - Client connection */
struct stat *filestats, /* O - File information */
char *filename, /* IO - Filename buffer */
int len) /* I - Buffer length */
{
int status; /* Status of filesystem calls */
char *ptr; /* Pointer info filename */
int plen; /* Remaining length after pointer */
char language[7]; /* Language subdirectory, if any */
/*
* Figure out the real filename...
*/
language[0] = '\0';
if (!strncmp(con->uri, "/ppd/", 5))
snprintf(filename, len, "%s%s", ServerRoot, con->uri);
else if (!strncmp(con->uri, "/rss/", 5) && !strchr(con->uri + 5, '/'))
snprintf(filename, len, "%s/rss/%s", CacheDir, con->uri + 5);
else if (!strncmp(con->uri, "/admin/conf/", 12))
snprintf(filename, len, "%s%s", ServerRoot, con->uri + 11);
else if (!strncmp(con->uri, "/admin/log/", 11))
{
if (!strncmp(con->uri + 11, "access_log", 10) && AccessLog[0] == '/')
strlcpy(filename, AccessLog, len);
else if (!strncmp(con->uri + 11, "error_log", 9) && ErrorLog[0] == '/')
strlcpy(filename, ErrorLog, len);
else if (!strncmp(con->uri + 11, "page_log", 8) && PageLog[0] == '/')
strlcpy(filename, PageLog, len);
else
return (NULL);
}
else if (con->language)
{
snprintf(language, sizeof(language), "/%s", con->language->language);
snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
}
else
snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
if ((ptr = strchr(filename, '?')) != NULL)
*ptr = '\0';
/*
* Grab the status for this language; if there isn't a language-specific file
* then fallback to the default one...
*/
if ((status = stat(filename, filestats)) != 0 && language[0] &&
strncmp(con->uri, "/ppd/", 5) &&
strncmp(con->uri, "/admin/conf/", 12) &&
strncmp(con->uri, "/admin/log/", 11))
{
/*
* Drop the country code...
*/
language[3] = '\0';
snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
if ((ptr = strchr(filename, '?')) != NULL)
*ptr = '\0';
if ((status = stat(filename, filestats)) != 0)
{
/*
* Drop the language prefix and try the root directory...
*/
language[0] = '\0';
snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
if ((ptr = strchr(filename, '?')) != NULL)
*ptr = '\0';
status = stat(filename, filestats);
}
}
/*
* If we're found a directory, get the index.html file instead...
*/
if (!status && S_ISDIR(filestats->st_mode))
{
/*
* Make sure the URI ends with a slash...
*/
if (con->uri[strlen(con->uri) - 1] != '/')
strlcat(con->uri, "/", sizeof(con->uri));
/*
* Find the directory index file, trying every language...
*/
do
{
if (status && language[0])
{
/*
* Try a different language subset...
*/
if (language[3])
language[0] = '\0'; /* Strip country code */
else
language[0] = '\0'; /* Strip language */
}
/*
* Look for the index file...
*/
snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
if ((ptr = strchr(filename, '?')) != NULL)
*ptr = '\0';
ptr = filename + strlen(filename);
plen = len - (ptr - filename);
strlcpy(ptr, "index.html", plen);
status = stat(filename, filestats);
#ifdef HAVE_JAVA
if (status)
{
strlcpy(ptr, "index.class", plen);
status = stat(filename, filestats);
}
#endif /* HAVE_JAVA */
#ifdef HAVE_PERL
if (status)
{
strlcpy(ptr, "index.pl", plen);
status = stat(filename, filestats);
}
#endif /* HAVE_PERL */
#ifdef HAVE_PHP
if (status)
{
strlcpy(ptr, "index.php", plen);
status = stat(filename, filestats);
}
#endif /* HAVE_PHP */
#ifdef HAVE_PYTHON
if (status)
{
strlcpy(ptr, "index.pyc", plen);
status = stat(filename, filestats);
}
if (status)
{
strlcpy(ptr, "index.py", plen);
status = stat(filename, filestats);
}
#endif /* HAVE_PYTHON */
}
while (status && language[0]);
}
cupsdLogMessage(CUPSD_LOG_DEBUG2, "get_file: %d filename=%s size=%d",
con->http.fd, filename,
status ? -1 : (int)filestats->st_size);
if (!status)
con->http.data_remaining = (int)filestats->st_size;
if (status)
return (NULL);
else
return (filename);
}
/*
* 'install_conf_file()' - Install a configuration file.
*/
static http_status_t /* O - Status */
install_conf_file(cupsd_client_t *con) /* I - Connection */
{
cups_file_t *in, /* Input file */
*out; /* Output file */
char buffer[1024]; /* Copy buffer */
int bytes; /* Number of bytes */
char conffile[1024], /* Configuration filename */
newfile[1024], /* New config filename */
oldfile[1024]; /* Old config filename */
struct stat confinfo; /* Config file info */
/*
* First construct the filenames...
*/
snprintf(conffile, sizeof(conffile), "%s%s", ServerRoot, con->uri + 11);
snprintf(newfile, sizeof(newfile), "%s%s.N", ServerRoot, con->uri + 11);
snprintf(oldfile, sizeof(oldfile), "%s%s.O", ServerRoot, con->uri + 11);
cupsdLogMessage(CUPSD_LOG_INFO, "Installing config file \"%s\"...", conffile);
/*
* Get the owner, group, and permissions of the configuration file.
* If it doesn't exist, assign it to the User and Group in the
* cupsd.conf file with mode 0640 permissions.
*/
if (stat(conffile, &confinfo))
{
confinfo.st_uid = User;
confinfo.st_gid = Group;
confinfo.st_mode = ConfigFilePerm;
}
/*
* Open the request file and new config file...
*/
if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
{
cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open request file \"%s\" - %s",
con->filename, strerror(errno));
return (HTTP_SERVER_ERROR);
}
if ((out = cupsFileOpen(newfile, "wb")) == NULL)
{
cupsFileClose(in);
cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open config file \"%s\" - %s",
newfile, strerror(errno));
return (HTTP_SERVER_ERROR);
}
fchmod(cupsFileNumber(out), confinfo.st_mode);
fchown(cupsFileNumber(out), confinfo.st_uid, confinfo.st_gid);
/*
* Copy from the request to the new config file...
*/
while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
if (cupsFileWrite(out, buffer, bytes) < bytes)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Unable to copy to config file \"%s\" - %s",
newfile, strerror(errno));
cupsFileClose(in);
cupsFileClose(out);
unlink(newfile);
return (HTTP_SERVER_ERROR);
}
/*
* Close the files...
*/
cupsFileClose(in);
if (cupsFileClose(out))
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Error file closing config file \"%s\" - %s",
newfile, strerror(errno));
unlink(newfile);
return (HTTP_SERVER_ERROR);
}
/*
* Remove the request file...
*/
unlink(con->filename);
cupsdClearString(&con->filename);
/*
* Unlink the old backup, rename the current config file to the backup
* filename, and rename the new config file to the config file name...
*/
if (unlink(oldfile))
if (errno != ENOENT)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Unable to remove backup config file \"%s\" - %s",
oldfile, strerror(errno));
unlink(newfile);
return (HTTP_SERVER_ERROR);
}
if (rename(conffile, oldfile))
if (errno != ENOENT)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Unable to rename old config file \"%s\" - %s",
conffile, strerror(errno));
unlink(newfile);
return (HTTP_SERVER_ERROR);
}
if (rename(newfile, conffile))
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Unable to rename new config file \"%s\" - %s",
newfile, strerror(errno));
rename(oldfile, conffile);
unlink(newfile);
return (HTTP_SERVER_ERROR);
}
/*
* If the cupsd.conf file was updated, set the NeedReload flag...
*/
if (!strcmp(con->uri, "/admin/conf/cupsd.conf"))
NeedReload = RELOAD_CUPSD;
else
NeedReload = RELOAD_ALL;
ReloadTime = time(NULL);
/*
* Return that the file was created successfully...
*/
return (HTTP_CREATED);
}
/*
* 'is_cgi()' - Is the resource a CGI script/program?
*/
static int /* O - 1 = CGI, 0 = file */
is_cgi(cupsd_client_t *con, /* I - Client connection */
const char *filename, /* I - Real filename */
struct stat *filestats, /* I - File information */
mime_type_t *type) /* I - MIME type */
{
const char *options; /* Options on URL */
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"is_cgi(con=%p, filename=\"%s\", filestats=%p, type=%s/%s)\n",
con, filename, filestats, type ? type->super : "unknown",
type ? type->type : "unknown");
/*
* Get the options, if any...
*/
if ((options = strchr(con->uri, '?')) != NULL)
{
options ++;
if (strchr(options, '='))
cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", options);
}
/*
* Check for known types...
*/
if (!type || strcasecmp(type->super, "application"))
{
cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
return (0);
}
if (!strcasecmp(type->type, "x-httpd-cgi") &&
(filestats->st_mode & 0111))
{
/*
* "application/x-httpd-cgi" is a CGI script.
*/
cupsdSetString(&con->command, filename);
filename = strrchr(filename, '/') + 1; /* Filename always absolute */
cupsdSetString(&con->options, options);
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
con->command, con->options);
return (1);
}
#ifdef HAVE_JAVA
else if (!strcasecmp(type->type, "x-httpd-java"))
{
/*
* "application/x-httpd-java" is a Java servlet.
*/
cupsdSetString(&con->command, CUPS_JAVA);
if (options)
cupsdSetStringf(&con->options, " %s %s", filename, options);
else
cupsdSetStringf(&con->options, " %s", filename);
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
con->command, con->options);
return (1);
}
#endif /* HAVE_JAVA */
#ifdef HAVE_PERL
else if (!strcasecmp(type->type, "x-httpd-perl"))
{
/*
* "application/x-httpd-perl" is a Perl page.
*/
cupsdSetString(&con->command, CUPS_PERL);
if (options)
cupsdSetStringf(&con->options, " %s %s", filename, options);
else
cupsdSetStringf(&con->options, " %s", filename);
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
con->command, con->options);
return (1);
}
#endif /* HAVE_PERL */
#ifdef HAVE_PHP
else if (!strcasecmp(type->type, "x-httpd-php"))
{
/*
* "application/x-httpd-php" is a PHP page.
*/
cupsdSetString(&con->command, CUPS_PHP);
if (options)
cupsdSetStringf(&con->options, " %s %s", filename, options);
else
cupsdSetStringf(&con->options, " %s", filename);
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
con->command, con->options);
return (1);
}
#endif /* HAVE_PHP */
#ifdef HAVE_PYTHON
else if (!strcasecmp(type->type, "x-httpd-python"))
{
/*
* "application/x-httpd-python" is a Python page.
*/
cupsdSetString(&con->command, CUPS_PYTHON);
if (options)
cupsdSetStringf(&con->options, " %s %s", filename, options);
else
cupsdSetStringf(&con->options, " %s", filename);
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
con->command, con->options);
return (1);
}
#endif /* HAVE_PYTHON */
cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
return (0);
}
/*
* 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
*/
static int /* O - 0 if relative, 1 if absolute */
is_path_absolute(const char *path) /* I - Input path */
{
/*
* Check for a leading slash...
*/
if (path[0] != '/')
return (0);
/*
* Check for "/.." in the path...
*/
while ((path = strstr(path, "/..")) != NULL)
{
if (!path[3] || path[3] == '/')
return (0);
path ++;
}
/*
* If we haven't found any relative paths, return 1 indicating an
* absolute path...
*/
return (1);
}
#ifdef HAVE_SSL
/*
* 'make_certificate()' - Make a self-signed SSL/TLS certificate.
*/
static int /* O - 1 on success, 0 on failure */
make_certificate(cupsd_client_t *con) /* I - Client connection */
{
#if defined(HAVE_LIBSSL) && defined(HAVE_WAITPID)
int pid, /* Process ID of command */
status; /* Status of command */
char command[1024], /* Command */
*argv[12], /* Command-line arguments */
*envp[MAX_ENV + 1], /* Environment variables */
home[1024], /* HOME environment variable */
infofile[1024], /* Type-in information for cert */
seedfile[1024]; /* Random number seed file */
int envc, /* Number of environment variables */
bytes; /* Bytes written */
cups_file_t *fp; /* Seed/info file */
int infofd; /* Info file descriptor */
/*
* Run the "openssl" command to seed the random number generator and
* generate a self-signed certificate that is good for 10 years:
*
* openssl rand -rand seedfile 1
*
* openssl req -new -x509 -keyout ServerKey \
* -out ServerCertificate -days 3650 -nodes
*
* The seeding step is crucial in ensuring that the openssl command
* does not block on systems without sufficient entropy...
*/
if (!cupsFileFind("openssl", getenv("PATH"), 1, command, sizeof(command)))
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"No SSL certificate and openssl command not found!");
return (0);
}
if (access("/dev/urandom", 0))
{
/*
* If the system doesn't provide /dev/urandom, then any random source
* will probably be blocking-style, so generate some random data to
* use as a seed for the certificate. Note that we have already
* seeded the random number generator in cupsdInitCerts()...
*/
cupsdLogMessage(CUPSD_LOG_INFO,
"Seeding the random number generator...");
snprintf(home, sizeof(home), "HOME=%s", TempDir);
/*
* Write the seed file...
*/
if ((fp = cupsTempFile2(seedfile, sizeof(seedfile))) == NULL)
{
cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create seed file %s - %s",
seedfile, strerror(errno));
return (0);
}
for (bytes = 0; bytes < 262144; bytes ++)
cupsFilePutChar(fp, random());
cupsFileClose(fp);
/*
* Run the openssl command to seed its random number generator...
*/
argv[0] = "openssl";
argv[1] = "rand";
argv[2] = "-rand";
argv[3] = seedfile;
argv[4] = "1";
argv[5] = NULL;
envc = cupsdLoadEnv(envp, MAX_ENV);
envp[envc++] = home;
envp[envc] = NULL;
if (!cupsdStartProcess(command, argv, envp, -1, -1, -1, -1, -1, 1, &pid))
{
unlink(seedfile);
return (0);
}
while (waitpid(pid, &status, 0) < 0)
if (errno != EINTR)
{
status = 1;
break;
}
cupsdFinishProcess(pid, command, sizeof(command));
/*
* Remove the seed file, as it is no longer needed...
*/
unlink(seedfile);
if (status)
{
if (WIFEXITED(status))
cupsdLogMessage(CUPSD_LOG_ERROR,
"Unable to seed random number generator - "
"the openssl command stopped with status %d!",
WEXITSTATUS(status));
else
cupsdLogMessage(CUPSD_LOG_ERROR,
"Unable to seed random number generator - "
"the openssl command crashed on signal %d!",
WTERMSIG(status));
return (0);
}
}
/*
* Create a file with the certificate information fields...
*
* Note: This assumes that the default questions are asked by the openssl
* command...
*/
if ((fp = cupsTempFile2(infofile, sizeof(infofile))) == NULL)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Unable to create certificate information file %s - %s",
infofile, strerror(errno));
return (0);
}
cupsFilePrintf(fp, ".\n.\n.\n%s\n.\n%s\n%s\n",
ServerName, ServerName, ServerAdmin);
cupsFileClose(fp);
cupsdLogMessage(CUPSD_LOG_INFO,
"Generating SSL server key and certificate...");
argv[0] = "openssl";
argv[1] = "req";
argv[2] = "-new";
argv[3] = "-x509";
argv[4] = "-keyout";
argv[5] = ServerKey;
argv[6] = "-out";
argv[7] = ServerCertificate;
argv[8] = "-days";
argv[9] = "3650";
argv[10] = "-nodes";
argv[11] = NULL;
cupsdLoadEnv(envp, MAX_ENV);
infofd = open(infofile, O_RDONLY);
if (!cupsdStartProcess(command, argv, envp, infofd, -1, -1, -1, -1, 1, &pid))
{
close(infofd);
unlink(infofile);
return (0);
}
close(infofd);
unlink(infofile);
while (waitpid(pid, &status, 0) < 0)
if (errno != EINTR)
{
status = 1;
break;
}
cupsdFinishProcess(pid, command, sizeof(command));
if (status)
{
if (WIFEXITED(status))
cupsdLogMessage(CUPSD_LOG_ERROR,
"Unable to create SSL server key and certificate - "
"the openssl command stopped with status %d!",
WEXITSTATUS(status));
else
cupsdLogMessage(CUPSD_LOG_ERROR,
"Unable to create SSL server key and certificate - "
"the openssl command crashed on signal %d!",
WTERMSIG(status));
}
else
{
cupsdLogMessage(CUPSD_LOG_INFO, "Created SSL server key file \"%s\"...",
ServerKey);
cupsdLogMessage(CUPSD_LOG_INFO,
"Created SSL server certificate file \"%s\"...",
ServerCertificate);
}
return (!status);
#elif defined(HAVE_GNUTLS)
gnutls_x509_crt crt; /* Self-signed certificate */
gnutls_x509_privkey key; /* Encryption key */
cups_lang_t *language; /* Default language info */
cups_file_t *fp; /* Key/cert file */
unsigned char buffer[8192]; /* Buffer for x509 data */
size_t bytes; /* Number of bytes of data */
unsigned char serial[4]; /* Serial number buffer */
time_t curtime; /* Current time */
int result; /* Result of GNU TLS calls */
/*
* Create the encryption key...
*/
cupsdLogMessage(CUPSD_LOG_INFO, "Generating SSL server key...");
gnutls_x509_privkey_init(&key);
gnutls_x509_privkey_generate(key, GNUTLS_PK_RSA, 2048, 0);
/*
* Save it...
*/
bytes = sizeof(buffer);
if ((result = gnutls_x509_privkey_export(key, GNUTLS_X509_FMT_PEM,
buffer, &bytes)) < 0)
{
cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to export SSL server key - %s",
gnutls_strerror(result));
gnutls_x509_privkey_deinit(key);
return (0);
}
else if ((fp = cupsFileOpen(ServerKey, "w")) != NULL)
{
cupsFileWrite(fp, (char *)buffer, bytes);
cupsFileClose(fp);
cupsdLogMessage(CUPSD_LOG_INFO, "Created SSL server key file \"%s\"...",
ServerKey);
}
else
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Unable to create SSL server key file \"%s\" - %s",
ServerKey, strerror(errno));
gnutls_x509_privkey_deinit(key);
return (0);
}
/*
* Create the self-signed certificate...
*/
cupsdLogMessage(CUPSD_LOG_INFO, "Generating self-signed SSL certificate...");
language = cupsLangDefault();
curtime = time(NULL);
serial[0] = curtime >> 24;
serial[1] = curtime >> 16;
serial[2] = curtime >> 8;
serial[3] = curtime;
gnutls_x509_crt_init(&crt);
if (strlen(language->language) == 5)
gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
language->language + 3, 2);
else
gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
"US", 2);
gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COMMON_NAME, 0,
ServerName, strlen(ServerName));
gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATION_NAME, 0,
ServerName, strlen(ServerName));
gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATIONAL_UNIT_NAME,
0, "Unknown", 7);
gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_STATE_OR_PROVINCE_NAME, 0,
"Unknown", 7);
gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_LOCALITY_NAME, 0,
"Unknown", 7);
gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_PKCS9_EMAIL, 0,
ServerAdmin, strlen(ServerAdmin));
gnutls_x509_crt_set_key(crt, key);
gnutls_x509_crt_set_serial(crt, serial, sizeof(serial));
gnutls_x509_crt_set_activation_time(crt, curtime);
gnutls_x509_crt_set_expiration_time(crt, curtime + 10 * 365 * 86400);
gnutls_x509_crt_set_ca_status(crt, 0);
gnutls_x509_crt_set_subject_alternative_name(crt, GNUTLS_SAN_DNSNAME,
ServerName);
gnutls_x509_crt_set_key_purpose_oid(crt, GNUTLS_KP_TLS_WWW_SERVER, 0);
gnutls_x509_crt_set_key_usage(crt, GNUTLS_KEY_KEY_ENCIPHERMENT);
gnutls_x509_crt_set_version(crt, 3);
bytes = sizeof(buffer);
if (gnutls_x509_crt_get_key_id(crt, 0, buffer, &bytes) >= 0)
gnutls_x509_crt_set_subject_key_id(crt, buffer, bytes);
gnutls_x509_crt_sign(crt, crt, key);
/*
* Save it...
*/
bytes = sizeof(buffer);
if ((result = gnutls_x509_crt_export(crt, GNUTLS_X509_FMT_PEM,
buffer, &bytes)) < 0)
cupsdLogMessage(CUPSD_LOG_ERROR,
"Unable to export SSL server certificate - %s",
gnutls_strerror(result));
else if ((fp = cupsFileOpen(ServerCertificate, "w")) != NULL)
{
cupsFileWrite(fp, (char *)buffer, bytes);
cupsFileClose(fp);
cupsdLogMessage(CUPSD_LOG_INFO,
"Created SSL server certificate file \"%s\"...",
ServerCertificate);
}
else
cupsdLogMessage(CUPSD_LOG_ERROR,
"Unable to create SSL server certificate file \"%s\" - %s",
ServerCertificate, strerror(errno));
/*
* Cleanup...
*/
gnutls_x509_crt_deinit(crt);
gnutls_x509_privkey_deinit(key);
return (1);
#elif defined(HAVE_CDSASSL) && defined(HAVE_WAITPID)
int pid, /* Process ID of command */
status; /* Status of command */
char command[1024], /* Command */
*argv[4], /* Command-line arguments */
*envp[MAX_ENV + 1], /* Environment variables */
keychain[1024], /* Keychain argument */
infofile[1024]; /* Type-in information for cert */
cups_file_t *fp; /* Seed/info file */
int infofd; /* Info file descriptor */
/*
* Run the "certtool" command to generate a self-signed certificate...
*/
if (!cupsFileFind("certtool", getenv("PATH"), 1, command, sizeof(command)))
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"No SSL certificate and certtool command not found!");
return (0);
}
/*
* Create a file with the certificate information fields...
*
* Note: This assumes that the default questions are asked by the certtool
* command...
*/
if ((fp = cupsTempFile2(infofile, sizeof(infofile))) == NULL)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Unable to create certificate information file %s - %s",
infofile, strerror(errno));
return (0);
}
cupsFilePrintf(fp, "%s\nr\n\ny\nb\ns\ny\n%s\n\n\n\n\n%s\ny\n",
con->servername, con->servername, ServerAdmin);
cupsFileClose(fp);
cupsdLogMessage(CUPSD_LOG_INFO,
"Generating SSL server key and certificate...");
snprintf(keychain, sizeof(keychain), "k=%s", ServerCertificate);
argv[0] = "certtool";
argv[1] = "c";
argv[2] = keychain;
argv[3] = NULL;
cupsdLoadEnv(envp, MAX_ENV);
infofd = open(infofile, O_RDONLY);
if (!cupsdStartProcess(command, argv, envp, infofd, -1, -1, -1, -1, 1, &pid))
{
close(infofd);
unlink(infofile);
return (0);
}
close(infofd);
unlink(infofile);
while (waitpid(pid, &status, 0) < 0)
if (errno != EINTR)
{
status = 1;
break;
}
cupsdFinishProcess(pid, command, sizeof(command));
if (status)
{
if (WIFEXITED(status))
cupsdLogMessage(CUPSD_LOG_ERROR,
"Unable to create SSL server key and certificate - "
"the certtool command stopped with status %d!",
WEXITSTATUS(status));
else
cupsdLogMessage(CUPSD_LOG_ERROR,
"Unable to create SSL server key and certificate - "
"the certtool command crashed on signal %d!",
WTERMSIG(status));
}
else
{
cupsdLogMessage(CUPSD_LOG_INFO,
"Created SSL server certificate file \"%s\"...",
ServerCertificate);
}
return (!status);
#else
return (0);
#endif /* HAVE_LIBSSL && HAVE_WAITPID */
}
#endif /* HAVE_SSL */
/*
* 'pipe_command()' - Pipe the output of a command to the remote client.
*/
static int /* O - Process ID */
pipe_command(cupsd_client_t *con, /* I - Client connection */
int infile, /* I - Standard input for command */
int *outfile, /* O - Standard output for command */
char *command, /* I - Command to run */
char *options, /* I - Options for command */
int root) /* I - Run as root? */
{
int i; /* Looping var */
int pid; /* Process ID */
char *commptr, /* Command string pointer */
commch; /* Command string character */
char *uriptr; /* URI string pointer */
int fds[2]; /* Pipe FDs */
int argc; /* Number of arguments */
int envc; /* Number of environment variables */
char argbuf[10240], /* Argument buffer */
*argv[100], /* Argument strings */
*envp[MAX_ENV + 20]; /* Environment variables */
char auth_type[256], /* AUTH_TYPE environment variable */
content_length[1024], /* CONTENT_LENGTH environment variable */
content_type[1024], /* CONTENT_TYPE environment variable */
http_cookie[32768], /* HTTP_COOKIE environment variable */
http_referer[1024], /* HTTP_REFERER environment variable */
http_user_agent[1024], /* HTTP_USER_AGENT environment variable */
lang[1024], /* LANG environment variable */
path_info[1024], /* PATH_INFO environment variable */
remote_addr[1024], /* REMOTE_ADDR environment variable */
remote_host[1024], /* REMOTE_HOST environment variable */
remote_user[1024], /* REMOTE_USER environment variable */
script_filename[1024], /* SCRIPT_FILENAME environment variable */
script_name[1024], /* SCRIPT_NAME environment variable */
server_name[1024], /* SERVER_NAME environment variable */
server_port[1024]; /* SERVER_PORT environment variable */
ipp_attribute_t *attr; /* attributes-natural-language attribute */
/*
* Parse a copy of the options string, which is of the form:
*
* argument+argument+argument
* ?argument+argument+argument
* param=value&param=value
* ?param=value&param=value
* /name?argument+argument+argument
* /name?param=value&param=value
*
* If the string contains an "=" character after the initial name,
* then we treat it as a HTTP GET form request and make a copy of
* the remaining string for the environment variable.
*
* The string is always parsed out as command-line arguments, to
* be consistent with Apache...
*/
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"pipe_command: command=\"%s\", options=\"%s\"",
command, options ? options : "(null)");
argv[0] = command;
if (options)
strlcpy(argbuf, options, sizeof(argbuf));
else
argbuf[0] = '\0';
if (argbuf[0] == '/')
{
/*
* Found some trailing path information, set PATH_INFO...
*/
if ((commptr = strchr(argbuf, '?')) == NULL)
commptr = argbuf + strlen(argbuf);
commch = *commptr;
*commptr = '\0';
snprintf(path_info, sizeof(path_info), "PATH_INFO=%s", argbuf);
*commptr = commch;
}
else
{
commptr = argbuf;
path_info[0] = '\0';
if (*commptr == ' ')
commptr ++;
}
if (*commptr == '?' && con->operation == HTTP_GET && !con->query_string)
{
commptr ++;
cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", commptr);
}
argc = 1;
if (*commptr)
{
argv[argc ++] = commptr;
for (; *commptr && argc < 99; commptr ++)
{
/*
* Break arguments whenever we see a + or space...
*/
if (*commptr == ' ' || *commptr == '+')
{
while (*commptr == ' ' || *commptr == '+')
*commptr++ = '\0';
/*
* If we don't have a blank string, save it as another argument...
*/
if (*commptr)
{
argv[argc] = commptr;
argc ++;
}
else
break;
}
else if (*commptr == '%' && isxdigit(commptr[1] & 255) &&
isxdigit(commptr[2] & 255))
{
/*
* Convert the %xx notation to the individual character.
*/
if (commptr[1] >= '0' && commptr[1] <= '9')
*commptr = (commptr[1] - '0') << 4;
else
*commptr = (tolower(commptr[1]) - 'a' + 10) << 4;
if (commptr[2] >= '0' && commptr[2] <= '9')
*commptr |= commptr[2] - '0';
else
*commptr |= tolower(commptr[2]) - 'a' + 10;
_cups_strcpy(commptr + 1, commptr + 3);
/*
* Check for a %00 and break if that is the case...
*/
if (!*commptr)
break;
}
}
}
argv[argc] = NULL;
/*
* Setup the environment variables as needed...
*/
if (con->username[0])
{
snprintf(auth_type, sizeof(auth_type), "AUTH_TYPE=%s",
httpGetField(HTTP(con), HTTP_FIELD_AUTHORIZATION));
if ((uriptr = strchr(auth_type + 10, ' ')) != NULL)
*uriptr = '\0';
}
else
auth_type[0] = '\0';
if (con->request &&
(attr = ippFindAttribute(con->request, "attributes-natural-language",
IPP_TAG_LANGUAGE)) != NULL)
{
switch (strlen(attr->values[0].string.text))
{
default :
/*
* This is an unknown or badly formatted language code; use
* the POSIX locale...
*/
strcpy(lang, "LANG=C");
break;
case 2 :
/*
* Just the language code (ll)...
*/
snprintf(lang, sizeof(lang), "LANG=%s.UTF8",
attr->values[0].string.text);
break;
case 5 :
/*
* Language and country code (ll-cc)...
*/
snprintf(lang, sizeof(lang), "LANG=%c%c_%c%c.UTF8",
attr->values[0].string.text[0],
attr->values[0].string.text[1],
toupper(attr->values[0].string.text[3] & 255),
toupper(attr->values[0].string.text[4] & 255));
break;
}
}
else if (con->language)
snprintf(lang, sizeof(lang), "LANG=%s.UTF8", con->language->language);
else
strcpy(lang, "LANG=C");
strcpy(remote_addr, "REMOTE_ADDR=");
httpAddrString(con->http.hostaddr, remote_addr + 12,
sizeof(remote_addr) - 12);
snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
con->http.hostname);
snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
if ((uriptr = strchr(script_name, '?')) != NULL)
*uriptr = '\0';
snprintf(script_filename, sizeof(script_filename), "SCRIPT_FILENAME=%s%s",
DocumentRoot, script_name + 12);
sprintf(server_port, "SERVER_PORT=%d", con->serverport);
snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
con->servername);
envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
if (auth_type[0])
envp[envc ++] = auth_type;
envp[envc ++] = lang;
envp[envc ++] = "REDIRECT_STATUS=1";
envp[envc ++] = "GATEWAY_INTERFACE=CGI/1.1";
envp[envc ++] = server_name;
envp[envc ++] = server_port;
envp[envc ++] = remote_addr;
envp[envc ++] = remote_host;
envp[envc ++] = script_name;
envp[envc ++] = script_filename;
if (path_info[0])
envp[envc ++] = path_info;
if (con->username[0])
{
snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
envp[envc ++] = remote_user;
}
if (con->http.version == HTTP_1_1)
envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
else if (con->http.version == HTTP_1_0)
envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
else
envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
if (con->http.cookie)
{
snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
con->http.cookie);
envp[envc ++] = http_cookie;
}
if (con->http.fields[HTTP_FIELD_USER_AGENT][0])
{
snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
con->http.fields[HTTP_FIELD_USER_AGENT]);
envp[envc ++] = http_user_agent;
}
if (con->http.fields[HTTP_FIELD_REFERER][0])
{
snprintf(http_referer, sizeof(http_referer), "HTTP_REFERER=%s",
con->http.fields[HTTP_FIELD_REFERER]);
envp[envc ++] = http_referer;
}
if (con->operation == HTTP_GET)
{
envp[envc ++] = "REQUEST_METHOD=GET";
if (con->query_string)
{
/*
* Add GET form variables after ?...
*/
envp[envc ++] = con->query_string;
}
}
else
{
sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT,
CUPS_LLCAST con->bytes);
snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
envp[envc ++] = "REQUEST_METHOD=POST";
envp[envc ++] = content_length;
envp[envc ++] = content_type;
}
/*
* Tell the CGI if we are using encryption...
*/
if (con->http.tls)
envp[envc ++] = "HTTPS=ON";
/*
* Terminate the environment array...
*/
envp[envc] = NULL;
if (LogLevel == CUPSD_LOG_DEBUG2)
{
for (i = 0; i < argc; i ++)
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"pipe_command: argv[%d] = \"%s\"", i, argv[i]);
for (i = 0; i < envc; i ++)
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"pipe_command: envp[%d] = \"%s\"", i, envp[i]);
}
/*
* Create a pipe for the output...
*/
if (cupsdOpenPipe(fds))
{
cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create pipes for CGI %s - %s",
argv[0], strerror(errno));
return (0);
}
/*
* Then execute the command...
*/
if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1],
-1, -1, root, &pid) < 0)
{
/*
* Error - can't fork!
*/
cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to fork for CGI %s - %s", argv[0],
strerror(errno));
cupsdClosePipe(fds);
pid = 0;
}
else
{
/*
* Fork successful - return the PID...
*/
if (con->username[0])
cupsdAddCert(pid, con->username);
cupsdLogMessage(CUPSD_LOG_DEBUG, "[CGI] %s started - PID = %d",
command, pid);
*outfile = fds[0];
close(fds[1]);
}
return (pid);
}
/*
* 'write_file()' - Send a file via HTTP.
*/
static int /* O - 0 on failure, 1 on success */
write_file(cupsd_client_t *con, /* I - Client connection */
http_status_t code, /* I - HTTP status */
char *filename, /* I - Filename */
char *type, /* I - File type */
struct stat *filestats) /* O - File information */
{
con->file = open(filename, O_RDONLY);
cupsdLogMessage(CUPSD_LOG_DEBUG2, "write_file: %d file=%d", con->http.fd,
con->file);
if (con->file < 0)
return (0);
fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
con->pipe_pid = 0;
if (!cupsdSendHeader(con, code, type, AUTH_NONE))
return (0);
if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
httpGetDateString(filestats->st_mtime)) < 0)
return (0);
if (httpPrintf(HTTP(con), "Content-Length: " CUPS_LLFMT "\r\n",
CUPS_LLCAST filestats->st_size) < 0)
return (0);
if (httpPrintf(HTTP(con), "\r\n") < 0)
return (0);
if (cupsdFlushHeader(con) < 0)
return (0);
con->http.data_encoding = HTTP_ENCODE_LENGTH;
con->http.data_remaining = filestats->st_size;
if (con->http.data_remaining <= INT_MAX)
con->http._data_remaining = con->http.data_remaining;
else
con->http._data_remaining = INT_MAX;
cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient,
(cupsd_selfunc_t)cupsdWriteClient, con);
return (1);
}
/*
* 'write_pipe()' - Flag that data is available on the CGI pipe.
*/
static void
write_pipe(cupsd_client_t *con) /* I - Client connection */
{
cupsdLogMessage(CUPSD_LOG_DEBUG2, "write_pipe: CGI output on fd %d...",
con->file);
con->file_ready = 1;
cupsdRemoveSelect(con->file);
cupsdAddSelect(con->http.fd, NULL, (cupsd_selfunc_t)cupsdWriteClient, con);
}
/*
* End of "$Id: client.c 6999 2007-09-28 19:46:53Z mike $".
*/