diff -up cups-2.0.3/config.h.in.lspp cups-2.0.3/config.h.in --- cups-2.0.3/config.h.in.lspp 2014-12-09 21:50:51.000000000 +0100 +++ cups-2.0.3/config.h.in 2015-06-09 17:38:42.803451529 +0200 @@ -716,6 +716,13 @@ static __inline int _cups_abs(int i) { r # endif /* __GNUC__ || __STDC_VERSION__ */ #endif /* !HAVE_ABS && !abs */ +/* + * Are we trying to meet LSPP requirements? + */ + +#undef WITH_LSPP + + #endif /* !_CUPS_CONFIG_H_ */ /* diff -up cups-2.0.3/config-scripts/cups-lspp.m4.lspp cups-2.0.3/config-scripts/cups-lspp.m4 --- cups-2.0.3/config-scripts/cups-lspp.m4.lspp 2015-06-09 17:38:42.803451529 +0200 +++ cups-2.0.3/config-scripts/cups-lspp.m4 2015-06-09 17:38:42.803451529 +0200 @@ -0,0 +1,36 @@ +dnl +dnl LSPP code for the Common UNIX Printing System (CUPS). +dnl +dnl Copyright 2005-2006 by Hewlett-Packard Development Company, L.P. +dnl +dnl This program is free software; you can redistribute it and/or modify +dnl it under the terms of the GNU General Public License as published by +dnl the Free Software Foundation; version 2. +dnl +dnl This program is distributed in the hope that it will be useful, but +dnl WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +dnl General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with this program; if not, write to the Free Software Foundation, +dnl Inc., 51 Franklin Street, Fifth Floor Boston, MA 02110-1301 USA +dnl + +dnl Are we trying to meet LSPP requirements +AC_ARG_ENABLE(lspp, [ --enable-lspp turn on auditing and label support, default=no]) + +if test x"$enable_lspp" != xno; then + case "$uname" in + Linux) + AC_CHECK_LIB(audit,audit_log_user_message, [LIBAUDIT="-laudit" AC_SUBST(LIBAUDIT)]) + AC_CHECK_HEADER(libaudit.h) + AC_CHECK_LIB(selinux,getpeercon, [LIBSELINUX="-lselinux" AC_SUBST(LIBSELINUX)]) + AC_CHECK_HEADER(selinux/selinux.h) + AC_DEFINE(WITH_LSPP) + ;; + *) + # All others + ;; + esac +fi diff -up cups-2.0.3/configure.ac.lspp cups-2.0.3/configure.ac --- cups-2.0.3/configure.ac.lspp 2014-10-21 13:55:01.000000000 +0200 +++ cups-2.0.3/configure.ac 2015-06-09 17:38:42.803451529 +0200 @@ -36,6 +36,8 @@ sinclude(config-scripts/cups-startup.m4) sinclude(config-scripts/cups-defaults.m4) sinclude(config-scripts/cups-scripting.m4) +sinclude(config-scripts/cups-lspp.m4) + INSTALL_LANGUAGES="" UNINSTALL_LANGUAGES="" LANGFILES="" diff -up cups-2.0.3/filter/common.c.lspp cups-2.0.3/filter/common.c --- cups-2.0.3/filter/common.c.lspp 2014-02-06 19:33:34.000000000 +0100 +++ cups-2.0.3/filter/common.c 2015-06-09 17:38:42.804451526 +0200 @@ -19,6 +19,12 @@ * Include necessary headers... */ +#include "config.h" +#ifdef WITH_LSPP +#define _GNU_SOURCE +#include +#endif /* WITH_LSPP */ + #include "common.h" #include @@ -301,6 +307,18 @@ WriteLabelProlog(const char *label, /* I { const char *classification; /* CLASSIFICATION environment variable */ const char *ptr; /* Temporary string pointer */ +#ifdef WITH_LSPP + int i, /* counter */ + n, /* counter */ + lines, /* number of lines needed */ + line_len, /* index into tmp_label */ + label_len, /* length of the label in characters */ + label_index, /* index into the label */ + longest, /* length of the longest line */ + longest_line, /* index to the longest line */ + max_width; /* maximum width in characters */ + char **wrapped_label; /* label with line breaks */ +#endif /* WITH_LSPP */ /* @@ -323,6 +341,124 @@ WriteLabelProlog(const char *label, /* I return; } +#ifdef WITH_LSPP + if (strncmp(classification, "LSPP:", 5) == 0 && label == NULL) + { + /* + * Based on the 12pt fixed width font below determine the max_width + */ + max_width = width / 8; + longest_line = 0; + longest = 0; + classification += 5; // Skip the "LSPP:" + label_len = strlen(classification); + + if (label_len > max_width) + { + lines = 1 + (int)(label_len / max_width); + line_len = (int)(label_len / lines); + wrapped_label = malloc(sizeof(*wrapped_label) * lines); + label_index = i = n = 0; + while (classification[label_index]) + { + if ((label_index + line_len) > label_len) + break; + switch (classification[label_index + line_len + i]) + { + case ':': + case ',': + case '-': + i++; + wrapped_label[n++] = strndup(&classification[label_index], (line_len + i)); + label_index += line_len + i; + i = 0; + break; + default: + i++; + break; + } + if ((i + line_len) == max_width) + { + wrapped_label[n++] = strndup(&(classification[label_index]), (line_len + i)); + label_index = label_index + line_len + i; + i = 0; + } + } + wrapped_label[n] = strndup(&classification[label_index], label_len - label_index); + } + else + { + lines = 1; + wrapped_label = malloc(sizeof(*wrapped_label)); + wrapped_label[0] = (char*)classification; + } + + for (n = 0; n < lines; n++ ) + { + printf("userdict/ESPp%c(", ('a' + n)); + for (ptr = wrapped_label[n], i = 0; *ptr; ptr ++, i++) + if (*ptr < 32 || *ptr > 126) + printf("\\%03o", *ptr); + else + { + if (*ptr == '(' || *ptr == ')' || *ptr == '\\') + putchar('\\'); + + printf("%c", *ptr); + } + if (i > longest) + { + longest = i; + longest_line = n; + } + printf(")put\n"); + } + + /* + * For LSPP use a fixed width font so that line wrapping can be calculated + */ + + puts("userdict/ESPlf /Nimbus-Mono findfont 12 scalefont put"); + + /* + * Finally, the procedure to write the labels on the page... + */ + + printf("userdict/ESPwl{\n" + " ESPlf setfont\n"); + printf(" ESPp%c stringwidth pop dup 12 add exch -0.5 mul %.0f add\n ", + 'a' + longest_line, width * 0.5f); + for (n = 1; n < lines; n++) + printf(" dup"); + printf("\n 1 setgray\n"); + printf(" dup 6 sub %.0f %d index %.0f ESPrf\n", + (bottom - 2.0), (2 + lines), 6.0 + (16.0 * lines)); + printf(" dup 6 sub %.0f %d index %.0f ESPrf\n", + (top - 6.0 - (16.0 * lines)), (2 + lines), 4.0 + (16.0 * lines)); + printf(" 0 setgray\n"); + printf(" dup 6 sub %.0f %d index %.0f ESPrs\n", + (bottom - 2.0), (2 + lines), 6.0 + (16.0 * lines)); + printf(" dup 6 sub %.0f %d index %.0f ESPrs\n", + (top - 6.0 - (16.0 * lines)), (2 + lines), 4.0 + (16.0 * lines)); + for (n = 0; n < lines; n ++) + { + printf(" dup %.0f moveto ESPp%c show\n", + bottom + 6.0 + ((lines - (n+1)) * 16.0), 'a' + n); + printf(" %.0f moveto ESPp%c show\n", top + 2.0 - ((n + 1) * 16.0), 'a' + n); + } + printf(" pop\n" + "}bind put\n"); + + /* + * Do some clean up at the end of the LSPP special case + */ + free(wrapped_label); + + } + else + { +#endif /* !WITH_LSPP */ + /* * Set the classification + page label string... */ @@ -403,7 +539,10 @@ WriteLabelProlog(const char *label, /* I printf(" %.0f moveto ESPpl show\n", top - 14.0); puts("pop"); puts("}bind put"); + } +#ifdef WITH_LSPP } +#endif /* WITH_LSPP */ /* diff -up cups-2.0.3/filter/pstops.c.lspp cups-2.0.3/filter/pstops.c --- cups-2.0.3/filter/pstops.c.lspp 2015-05-22 19:27:37.000000000 +0200 +++ cups-2.0.3/filter/pstops.c 2015-06-09 17:38:42.804451526 +0200 @@ -3178,6 +3178,18 @@ write_label_prolog(pstops_doc_t *doc, /* { const char *classification; /* CLASSIFICATION environment variable */ const char *ptr; /* Temporary string pointer */ +#ifdef WITH_LSPP + int i, /* counter */ + n, /* counter */ + lines, /* number of lines needed */ + line_len, /* index into tmp_label */ + label_len, /* length of the label in characters */ + label_index, /* index into the label */ + longest, /* length of the longest line */ + longest_line, /* index to the longest line */ + max_width; /* maximum width in characters */ + char **wrapped_label; /* label with line breaks */ +#endif /* WITH_LSPP */ /* @@ -3200,6 +3212,124 @@ write_label_prolog(pstops_doc_t *doc, /* return; } +#ifdef WITH_LSPP + if (strncmp(classification, "LSPP:", 5) == 0 && label == NULL) + { + /* + * Based on the 12pt fixed width font below determine the max_width + */ + max_width = width / 8; + longest_line = 0; + longest = 0; + classification += 5; // Skip the "LSPP:" + label_len = strlen(classification); + + if (label_len > max_width) + { + lines = 1 + (int)(label_len / max_width); + line_len = (int)(label_len / lines); + wrapped_label = malloc(sizeof(*wrapped_label) * lines); + label_index = i = n = 0; + while (classification[label_index]) + { + if ((label_index + line_len) > label_len) + break; + switch (classification[label_index + line_len + i]) + { + case ':': + case ',': + case '-': + i++; + wrapped_label[n++] = strndup(&classification[label_index], (line_len + i)); + label_index += line_len + i; + i = 0; + break; + default: + i++; + break; + } + if ((i + line_len) == max_width) + { + wrapped_label[n++] = strndup(&(classification[label_index]), (line_len + i)); + label_index = label_index + line_len + i; + i = 0; + } + } + wrapped_label[n] = strndup(&classification[label_index], label_len - label_index); + } + else + { + lines = 1; + wrapped_label = malloc(sizeof(*wrapped_label)); + wrapped_label[0] = (char*)classification; + } + + for (n = 0; n < lines; n++ ) + { + printf("userdict/ESPp%c(", ('a' + n)); + for (ptr = wrapped_label[n], i = 0; *ptr; ptr ++, i++) + if (*ptr < 32 || *ptr > 126) + printf("\\%03o", *ptr); + else + { + if (*ptr == '(' || *ptr == ')' || *ptr == '\\') + putchar('\\'); + + printf("%c", *ptr); + } + if (i > longest) + { + longest = i; + longest_line = n; + } + printf(")put\n"); + } + + /* + * For LSPP use a fixed width font so that line wrapping can be calculated + */ + + puts("userdict/ESPlf /Nimbus-Mono findfont 12 scalefont put"); + + /* + * Finally, the procedure to write the labels on the page... + */ + + printf("userdict/ESPwl{\n" + " ESPlf setfont\n"); + printf(" ESPp%c stringwidth pop dup 12 add exch -0.5 mul %.0f add\n ", + 'a' + longest_line, width * 0.5f); + for (n = 1; n < lines; n++) + printf(" dup"); + printf("\n 1 setgray\n"); + printf(" dup 6 sub %.0f %d index %.0f ESPrf\n", + (bottom - 2.0), (2 + lines), 6.0 + (16.0 * lines)); + printf(" dup 6 sub %.0f %d index %.0f ESPrf\n", + (top - 6.0 - (16.0 * lines)), (2 + lines), 4.0 + (16.0 * lines)); + printf(" 0 setgray\n"); + printf(" dup 6 sub %.0f %d index %.0f ESPrs\n", + (bottom - 2.0), (2 + lines), 6.0 + (16.0 * lines)); + printf(" dup 6 sub %.0f %d index %.0f ESPrs\n", + (top - 6.0 - (16.0 * lines)), (2 + lines), 4.0 + (16.0 * lines)); + for (n = 0; n < lines; n ++) + { + printf(" dup %.0f moveto ESPp%c show\n", + bottom + 6.0 + ((lines - (n+1)) * 16.0), 'a' + n); + printf(" %.0f moveto ESPp%c show\n", top + 2.0 - ((n + 1) * 16.0), 'a' + n); + } + printf(" pop\n" + "}bind put\n"); + + /* + * Do some clean up at the end of the LSPP special case + */ + free(wrapped_label); + + } + else + { +#endif /* !WITH_LSPP */ + /* * Set the classification + page label string... */ @@ -3278,7 +3408,10 @@ write_label_prolog(pstops_doc_t *doc, /* doc_printf(doc, " %.0f moveto ESPpl show\n", top - 14.0); doc_puts(doc, "pop\n"); doc_puts(doc, "}bind put\n"); + } +#ifdef WITH_LSPP } +#endif /* WITH_LSPP */ /* diff -up cups-2.0.3/Makedefs.in.lspp cups-2.0.3/Makedefs.in --- cups-2.0.3/Makedefs.in.lspp 2015-06-09 17:38:42.762451666 +0200 +++ cups-2.0.3/Makedefs.in 2015-06-09 17:38:42.804451526 +0200 @@ -145,7 +145,7 @@ LDFLAGS = -L../cgi-bin -L../cups -L../f @LDFLAGS@ @RELROFLAGS@ @PIEFLAGS@ $(OPTIM) LINKCUPS = @LINKCUPS@ $(LIBGSSAPI) $(DNSSDLIBS) $(LIBZ) LINKCUPSIMAGE = @LINKCUPSIMAGE@ -LIBS = $(LINKCUPS) $(COMMONLIBS) +LIBS = $(LINKCUPS) $(COMMONLIBS) @LIBAUDIT@ @LIBSELINUX@ ONDEMANDFLAGS = @ONDEMANDFLAGS@ ONDEMANDLIBS = @ONDEMANDLIBS@ OPTIM = @OPTIM@ diff -up cups-2.0.3/scheduler/client.c.lspp cups-2.0.3/scheduler/client.c --- cups-2.0.3/scheduler/client.c.lspp 2015-06-08 20:33:44.000000000 +0200 +++ cups-2.0.3/scheduler/client.c 2015-06-09 17:38:42.806451519 +0200 @@ -24,12 +24,20 @@ #define _HTTP_NO_PRIVATE #include "cupsd.h" +#ifndef _GNU_SOURCE +#define _GNU_SOURCE +#endif /* !defined(_GNU_SOURCE) */ #ifdef __APPLE__ # include #endif /* __APPLE__ */ #ifdef HAVE_TCPD_H # include #endif /* HAVE_TCPD_H */ +#ifdef WITH_LSPP +# include +# include +# include +#endif /* WITH_LSPP */ /* @@ -265,6 +273,59 @@ cupsdAcceptClient(cupsd_listener_t *lis) } #endif /* HAVE_TCPD_H */ +#ifdef WITH_LSPP + if (is_lspp_config()) + { + struct ucred cr; + unsigned int cl=sizeof(cr); + + if (getsockopt(httpGetFd(con->http), SOL_SOCKET, SO_PEERCRED, &cr, &cl) == 0) + { + /* + * client_pid_to_auid() can be racey + * In this case the pid is based on a socket connected to the client + */ + if ((con->auid = client_pid_to_auid(cr.pid)) == -1) + { + httpClose(con->http); + cupsdLogClient(con, CUPSD_LOG_ERROR, + "Unable to determine client auid for client pid=%d", + cr.pid); + free(con); + return; + } + cupsdLogClient(con, CUPSD_LOG_INFO, + "peer's pid=%d, uid=%d, gid=%d, auid=%d", + cr.pid, cr.uid, cr.gid, con->auid); + } + else + { + httpClose(con->http); + cupsdLogClient(con, CUPSD_LOG_ERROR, "getsockopt() failed"); + free(con); + return; + } + + /* + * get the context of the peer connection + */ + if (getpeercon(httpGetFd(con->http), &con->scon)) + { + httpClose(con->http); + cupsdLogClient(con, CUPSD_LOG_ERROR, "getpeercon() failed"); + free(con); + return; + } + + cupsdLogClient(con, CUPSD_LOG_INFO, "client context=%s", con->scon); + } + else + { + cupsdLogClient(con, CUPSD_LOG_DEBUG, "skipping getpeercon()"); + cupsdSetString(&con->scon, UNKNOWN_SL); + } +#endif /* WITH_LSPP */ + #ifdef AF_LOCAL if (httpAddrFamily(httpGetAddress(con->http)) == AF_LOCAL) { @@ -560,6 +621,13 @@ cupsdReadClient(cupsd_client_t *con) /* mime_type_t *type; /* MIME type of file */ cupsd_printer_t *p; /* Printer */ static unsigned request_id = 0; /* Request ID for temp files */ +#ifdef WITH_LSPP + security_context_t spoolcon; /* context of the job file */ + context_t clicon; /* contex_t container for con->scon */ + context_t tmpcon; /* temp context to swap the level */ + char *clirange; /* SELinux sensitivity range */ + char *cliclearance; /* SELinux low end clearance */ +#endif /* WITH_LSPP */ status = HTTP_STATUS_CONTINUE; @@ -1939,6 +2007,73 @@ cupsdReadClient(cupsd_client_t *con) /* fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC); } +#ifdef WITH_LSPP + if (strncmp(con->scon, UNKNOWN_SL, strlen(UNKNOWN_SL)) != 0) + { + if (getfilecon(con->filename, &spoolcon) == -1) + { + cupsdSendError(con, HTTP_STATUS_SERVER_ERROR, CUPSD_AUTH_NONE); + cupsdCloseClient(con); + return; + } + clicon = context_new(con->scon); + tmpcon = context_new(spoolcon); + freecon(spoolcon); + if (!clicon || !tmpcon) + { + cupsdSendError(con, HTTP_STATUS_SERVER_ERROR, CUPSD_AUTH_NONE); + if (clicon) + context_free(clicon); + if (tmpcon) + context_free(tmpcon); + cupsdCloseClient(con); + return; + } + clirange = (char *) context_range_get(clicon); + if (clirange) + { + clirange = strdup(clirange); + if ((cliclearance = strtok(clirange, "-")) != NULL) + { + if (context_range_set(tmpcon, cliclearance) == -1) + { + cupsdSendError(con, HTTP_STATUS_SERVER_ERROR, CUPSD_AUTH_NONE); + free(clirange); + context_free(tmpcon); + context_free(clicon); + cupsdCloseClient(con); + return; + } + } + else + { + if (context_range_set(tmpcon, (context_range_get(clicon))) == -1) + { + cupsdSendError(con, HTTP_STATUS_SERVER_ERROR, CUPSD_AUTH_NONE); + free(clirange); + context_free(tmpcon); + context_free(clicon); + cupsdCloseClient(con); + return; + } + } + free(clirange); + } + if (setfilecon(con->filename, context_str(tmpcon)) == -1) + { + cupsdSendError(con, HTTP_STATUS_SERVER_ERROR, CUPSD_AUTH_NONE); + context_free(tmpcon); + context_free(clicon); + cupsdCloseClient(con); + return; + } + cupsdLogClient(con, CUPSD_LOG_DEBUG2, "%s set to %s", + con->filename, context_str(tmpcon)); + context_free(tmpcon); + context_free(clicon); + } +#endif /* WITH_LSPP */ + if (httpGetState(con->http) != HTTP_STATE_POST_SEND) { if (!httpWait(con->http, 0)) @@ -3433,6 +3568,49 @@ is_path_absolute(const char *path) /* I return (1); } +#ifdef WITH_LSPP +/* + * 'client_pid_to_auid()' - Using the client's pid, read /proc and determine the loginuid. + */ + +uid_t client_pid_to_auid(pid_t clipid) +{ + uid_t uid; + int len, in; + char buf[16] = {0}; + char fname[32] = {0}; + + + /* + * Hopefully this pid is still the one we are interested in. + */ + snprintf(fname, 32, "/proc/%d/loginuid", clipid); + in = open(fname, O_NOFOLLOW|O_RDONLY); + + if (in < 0) + return (uid_t) -1; + + errno = 0; + + do { + len = read(in, buf, sizeof(buf)); + } while (len < 0 && errno == EINTR); + + close(in); + + if (len < 0 || len >= sizeof(buf)) + return (uid_t) -1; + + errno = 0; + buf[len] = 0; + uid = strtol(buf, 0, 10); + + if (errno != 0) + return (uid_t) -1; + else + return uid; +} +#endif /* WITH_LSPP */ /* * 'pipe_command()' - Pipe the output of a command to the remote client. diff -up cups-2.0.3/scheduler/client.h.lspp cups-2.0.3/scheduler/client.h --- cups-2.0.3/scheduler/client.h.lspp 2014-03-21 17:42:53.000000000 +0100 +++ cups-2.0.3/scheduler/client.h 2015-06-09 17:38:42.806451519 +0200 @@ -18,6 +18,13 @@ #endif /* HAVE_AUTHORIZATION_H */ +/* Copyright (C) 2005 Trusted Computer Solutions, Inc. */ +/* (c) Copyright 2005-2006 Hewlett-Packard Development Company, L.P. */ + +#ifdef WITH_LSPP +#include +#endif /* WITH_LSPP */ + /* * HTTP client structure... */ @@ -67,6 +74,10 @@ struct cupsd_client_s #ifdef HAVE_AUTHORIZATION_H AuthorizationRef authref; /* Authorization ref */ #endif /* HAVE_AUTHORIZATION_H */ +#ifdef WITH_LSPP + security_context_t scon; /* Security context of connection */ + uid_t auid; /* Audit loginuid of the client */ +#endif /* WITH_LSPP */ }; #define HTTP(con) ((con)->http) @@ -140,6 +151,9 @@ extern void cupsdStartListening(void); extern void cupsdStopListening(void); extern void cupsdUpdateCGI(void); extern void cupsdWriteClient(cupsd_client_t *con); +#ifdef WITH_LSPP +extern uid_t client_pid_to_auid(pid_t clipid); +#endif /* WITH_LSPP */ #ifdef HAVE_SSL extern int cupsdEndTLS(cupsd_client_t *con); diff -up cups-2.0.3/scheduler/conf.c.lspp cups-2.0.3/scheduler/conf.c --- cups-2.0.3/scheduler/conf.c.lspp 2015-06-09 17:38:42.802451532 +0200 +++ cups-2.0.3/scheduler/conf.c 2015-06-09 17:38:42.807451516 +0200 @@ -36,6 +36,9 @@ # define INADDR_NONE 0xffffffff #endif /* !INADDR_NONE */ +#ifdef WITH_LSPP +# include +#endif /* WITH_LSPP */ /* * Configuration variable structure... @@ -127,6 +130,10 @@ static const cupsd_var_t cupsd_vars[] = { "ServerName", &ServerName, CUPSD_VARTYPE_STRING }, { "StrictConformance", &StrictConformance, CUPSD_VARTYPE_BOOLEAN }, { "Timeout", &Timeout, CUPSD_VARTYPE_TIME }, +#ifdef WITH_LSPP + { "AuditLog", &AuditLog, CUPSD_VARTYPE_INTEGER }, + { "PerPageLabels", &PerPageLabels, CUPSD_VARTYPE_BOOLEAN }, +#endif /* WITH_LSPP */ { "WebInterface", &WebInterface, CUPSD_VARTYPE_BOOLEAN } }; static const cupsd_var_t cupsfiles_vars[] = @@ -524,6 +531,9 @@ cupsdReadConfiguration(void) const char *tmpdir; /* TMPDIR environment variable */ struct stat tmpinfo; /* Temporary directory info */ cupsd_policy_t *p; /* Policy */ +#ifdef WITH_LSPP + char *audit_message; /* Audit message string */ +#endif /* WITH_LSPP */ /* @@ -831,6 +841,25 @@ cupsdReadConfiguration(void) RunUser = getuid(); +#ifdef WITH_LSPP + if (AuditLog != -1) + { + /* + * ClassifyOverride is set during read_configuration, if its ON, report it now + */ + if (ClassifyOverride) + audit_log_user_message(AuditLog, AUDIT_USYS_CONFIG, + "[Config] ClassifyOverride=enabled Users can override print banners", + ServerName, NULL, NULL, 1); + /* + * PerPageLabel is set during read_configuration, if its OFF, report it now + */ + if (!PerPageLabels) + audit_log_user_message(AuditLog, AUDIT_USYS_CONFIG, + "[Config] PerPageLabels=disabled", ServerName, NULL, NULL, 1); + } +#endif /* WITH_LSPP */ + cupsdLogMessage(CUPSD_LOG_INFO, "Remote access is %s.", RemotePort ? "enabled" : "disabled"); @@ -1225,7 +1254,19 @@ cupsdReadConfiguration(void) cupsdClearString(&Classification); if (Classification) + { cupsdLogMessage(CUPSD_LOG_INFO, "Security set to \"%s\"", Classification); +#ifdef WITH_LSPP + if (AuditLog != -1) + { + audit_message = NULL; + cupsdSetStringf(&audit_message, "[Config] Classification=%s", Classification); + audit_log_user_message(AuditLog, AUDIT_LABEL_LEVEL_CHANGE, audit_message, + ServerName, NULL, NULL, 1); + cupsdClearString(&audit_message); + } +#endif /* WITH_LSPP */ + } /* * Check the MaxClients setting, and then allocate memory for it... @@ -3702,6 +3743,18 @@ read_location(cups_file_t *fp, /* I - C return ((FatalErrors & CUPSD_FATAL_CONFIG) ? 0 : linenum); } +#ifdef WITH_LSPP +int is_lspp_config() +{ + if (Classification != NULL) + return ((_cups_strcasecmp(Classification, MLS_CONFIG) == 0) + || (_cups_strcasecmp(Classification, TE_CONFIG) == 0) + || (_cups_strcasecmp(Classification, SELINUX_CONFIG) == 0)); + else + return 0; +} +#endif /* WITH_LSPP */ + /* * 'read_policy()' - Read a definition. diff -up cups-2.0.3/scheduler/conf.h.lspp cups-2.0.3/scheduler/conf.h --- cups-2.0.3/scheduler/conf.h.lspp 2015-06-09 17:38:42.799451542 +0200 +++ cups-2.0.3/scheduler/conf.h 2015-06-09 17:38:42.807451516 +0200 @@ -248,6 +248,13 @@ VAR char *ServerKeychain VALUE(NULL); /* Keychain holding cert + key */ #endif /* HAVE_SSL */ +#ifdef WITH_LSPP +VAR int AuditLog VALUE(-1), + /* File descriptor for audit */ + PerPageLabels VALUE(TRUE); + /* Put the label on each page */ +#endif /* WITH_LSPP */ + #if defined(HAVE_LAUNCHD) || defined(HAVE_SYSTEMD) VAR int IdleExitTimeout VALUE(60); /* Time after which an idle cupsd will exit */ @@ -266,6 +273,9 @@ int HaveServerCreds VALUE(0); gss_cred_id_t ServerCreds; /* Server's GSS credentials */ #endif /* HAVE_GSSAPI */ +#ifdef WITH_LSPP +extern int is_lspp_config(void); +#endif /* WITH_LSPP */ /* * Prototypes... diff -up cups-2.0.3/scheduler/cupsd.h.lspp cups-2.0.3/scheduler/cupsd.h --- cups-2.0.3/scheduler/cupsd.h.lspp 2015-06-09 17:38:42.791451569 +0200 +++ cups-2.0.3/scheduler/cupsd.h 2015-06-09 17:38:42.807451516 +0200 @@ -13,6 +13,8 @@ * file is missing or damaged, see the license at "http://www.cups.org/". */ +/* Copyright (C) 2005 Trusted Computer Solutions, Inc. */ +/* (c) Copyright 2005-2006 Hewlett-Packard Development Company, L.P. */ /* * Include necessary headers. @@ -37,13 +39,20 @@ # include #endif /* WIN32 */ +#include "config.h" +#ifdef WITH_LSPP +# define MLS_CONFIG "mls" +# define TE_CONFIG "te" +# define SELINUX_CONFIG "SELinux" +# define UNKNOWN_SL "UNKNOWN SL" +#endif /* WITH_LSPP */ + #include "mime.h" #if defined(HAVE_CDSASSL) # include #endif /* HAVE_CDSASSL */ - /* * Some OS's don't have hstrerror(), most notably Solaris... */ diff -up cups-2.0.3/scheduler/ipp.c.lspp cups-2.0.3/scheduler/ipp.c --- cups-2.0.3/scheduler/ipp.c.lspp 2015-06-09 17:38:42.740451739 +0200 +++ cups-2.0.3/scheduler/ipp.c 2015-06-09 17:41:48.818829874 +0200 @@ -16,6 +16,9 @@ * file is missing or damaged, see the license at "http://www.cups.org/". */ +/* Copyright (C) 2005 Trusted Computer Solutions, Inc. */ +/* (c) Copyright 2005-2006 Hewlett-Packard Development Company, L.P. */ + /* * Include necessary headers... */ @@ -39,6 +42,14 @@ extern int mbr_check_membership_by_id(uu # endif /* HAVE_MEMBERSHIPPRIV_H */ #endif /* __APPLE__ */ +#ifdef WITH_LSPP +#include +#include +#include +#include +#include +#include +#endif /* WITH_LSPP */ /* * Local functions... @@ -63,6 +74,9 @@ static void cancel_all_jobs(cupsd_client static void cancel_job(cupsd_client_t *con, ipp_attribute_t *uri); static void cancel_subscription(cupsd_client_t *con, int id); static int check_rss_recipient(const char *recipient); +#ifdef WITH_LSPP +static int check_context(cupsd_client_t *con, cupsd_job_t *job); +#endif /* WITH_LSPP */ static int check_quotas(cupsd_client_t *con, cupsd_printer_t *p); static void close_job(cupsd_client_t *con, ipp_attribute_t *uri); static void copy_attrs(ipp_t *to, ipp_t *from, cups_array_t *ra, @@ -1214,6 +1228,21 @@ add_job(cupsd_client_t *con, /* I - Cl "time-at-creation", "time-at-processing" }; +#ifdef WITH_LSPP + char *audit_message; /* Audit message string */ + char *printerfile; /* device file pointed to by the printer */ + char *userheader = NULL; /* User supplied job-sheets[0] */ + char *userfooter = NULL; /* User supplied job-sheets[1] */ + int override = 0; /* Was a banner overrode on a job */ + security_id_t clisid; /* SELinux SID for the client */ + security_id_t psid; /* SELinux SID for the printer */ + context_t printercon; /* Printer's context string */ + struct stat printerstat; /* Printer's stat buffer */ + security_context_t devcon; /* Printer's SELinux context */ + struct avc_entry_ref avcref; /* Pointer to the access vector cache */ + security_class_t tclass; /* Object class for the SELinux check */ + access_vector_t avr; /* Access method being requested */ +#endif /* WITH_LSPP */ cupsdLogMessage(CUPSD_LOG_DEBUG2, "add_job(%p[%d], %p(%s), %p(%s/%s))", @@ -1530,6 +1559,106 @@ add_job(cupsd_client_t *con, /* I - Cl return (NULL); } +#ifdef WITH_LSPP + if (is_lspp_config()) + { + if (!con->scon || strncmp(con->scon, UNKNOWN_SL, strlen(UNKNOWN_SL)) == 0) + { + cupsdLogMessage(CUPSD_LOG_ERROR, "add_job: missing classification for connection \'%s\'!", printer->name); + send_ipp_status(con, IPP_INTERNAL_ERROR, _("Missing required security attributes.")); + return (NULL); + } + + /* + * Perform an access check so that if the user gets feedback at enqueue time + */ + + printerfile = strstr(printer->device_uri, "/dev/"); + if (printerfile == NULL && (strncmp(printer->device_uri, "file:/", 6) == 0)) + printerfile = printer->device_uri + strlen("file:"); + + if (printerfile != NULL) + { + cupsdLogMessage(CUPSD_LOG_DEBUG, "add_job: Attempting an access check on printer device %s", + printerfile); + + if (lstat(printerfile, &printerstat) < 0) + { + if (errno != ENOENT) + { + send_ipp_status(con, IPP_NOT_AUTHORIZED, _("Unable to stat the printer")); + return (NULL); + } + /* + * The printer does not exist, so for now assume it's a FileDevice + */ + tclass = SECCLASS_FILE; + avr = FILE__WRITE; + } + else if (S_ISCHR(printerstat.st_mode)) + { + tclass = SECCLASS_CHR_FILE; + avr = CHR_FILE__WRITE; + } + else if (S_ISREG(printerstat.st_mode)) + { + tclass = SECCLASS_FILE; + avr = FILE__WRITE; + } + else + { + send_ipp_status(con, IPP_NOT_AUTHORIZED, _("Printer is not a character device or regular file")); + return (NULL); + } + static int avc_initialized = 0; + if (!avc_initialized++) + avc_init("cupsd_enqueue_", NULL, NULL, NULL, NULL); + avc_entry_ref_init(&avcref); + if (avc_context_to_sid(con->scon, &clisid) != 0) + { + send_ipp_status(con, IPP_NOT_AUTHORIZED, _("Unable to get the SELinux sid of the client")); + return (NULL); + } + if (getfilecon(printerfile, &devcon) == -1) + { + send_ipp_status(con, IPP_NOT_AUTHORIZED, _("Unable to get the SELinux context of the printer")); + return (NULL); + } + printercon = context_new(devcon); + cupsdLogMessage(CUPSD_LOG_DEBUG, "add_job: printer context %s client context %s", + context_str(printercon), con->scon); + context_free(printercon); + + if (avc_context_to_sid(devcon, &psid) != 0) + { + send_ipp_status(con, IPP_NOT_AUTHORIZED, _("Unable to get the SELinux sid of the printer")); + freecon(devcon); + return (NULL); + } + freecon(devcon); + if (avc_has_perm(clisid, psid, tclass, avr, &avcref, NULL) != 0) + { + /* + * The access check failed, so cancel the job and send an audit message + */ + if (AuditLog != -1) + { + audit_message = NULL; + cupsdSetStringf(&audit_message, "job=? auid=%u acct=%s obj=%s refused" + " unable to access printer=%s", con->auid, + con->username, con->scon, printer->name); + audit_log_user_message(AuditLog, AUDIT_USER_LABELED_EXPORT, audit_message, + ServerName, NULL, NULL, 0); + cupsdClearString(&audit_message); + } + + send_ipp_status(con, IPP_NOT_AUTHORIZED, _("SELinux prohibits access to the printer")); + return (NULL); + } + } + } +#endif /* WITH_LSPP */ + if ((job = cupsdAddJob(priority, printer->name)) == NULL) { send_ipp_status(con, IPP_INTERNAL_ERROR, @@ -1538,6 +1667,32 @@ add_job(cupsd_client_t *con, /* I - Cl return (NULL); } +#ifdef WITH_LSPP + if (is_lspp_config()) + { + /* + * duplicate the security context and auid of the connection into the job structure + */ + job->scon = strdup(con->scon); + job->auid = con->auid; + + /* + * add the security context to the request so that on a restart the security + * attributes will be able to be restored + */ + ippAddString(con->request, IPP_TAG_JOB, IPP_TAG_NAME, "security-context", + NULL, job->scon); + } + else + { + /* + * Fill in the security context of the job as unlabeled + */ + cupsdLogMessage(CUPSD_LOG_DEBUG, "add_job: setting context of job to %s", UNKNOWN_SL); + cupsdSetString(&job->scon, UNKNOWN_SL); + } +#endif /* WITH_LSPP */ + job->dtype = printer->type & (CUPS_PRINTER_CLASS | CUPS_PRINTER_REMOTE); job->attrs = con->request; job->dirty = 1; @@ -1711,6 +1866,29 @@ add_job(cupsd_client_t *con, /* I - Cl ippSetString(job->attrs, &attr, 0, printer->job_sheets[0]); ippSetString(job->attrs, &attr, 1, printer->job_sheets[1]); } +#ifdef WITH_LSPP + else + { + /* + * The option was present, so capture the user supplied strings + */ + userheader = strdup(attr->values[0].string.text); + + if (attr->num_values > 1) + userfooter = strdup(attr->values[1].string.text); + + if (Classification != NULL && (strcmp(userheader, Classification) == 0) + && userfooter &&(strcmp(userfooter, Classification) == 0)) + { + /* + * Since both values are Classification, the user is not trying to Override + */ + free(userheader); + if (userfooter) free(userfooter); + userheader = userfooter = NULL; + } + } +#endif /* WITH_LSPP */ job->job_sheets = attr; @@ -1741,6 +1919,9 @@ add_job(cupsd_client_t *con, /* I - Cl "job-sheets=\"%s,none\", " "job-originating-user-name=\"%s\"", Classification, job->username); +#ifdef WITH_LSPP + override = 1; +#endif /* WITH_LSPP */ } else if (attr->num_values == 2 && strcmp(attr->values[0].string.text, @@ -1759,6 +1940,9 @@ add_job(cupsd_client_t *con, /* I - Cl "job-originating-user-name=\"%s\"", attr->values[0].string.text, attr->values[1].string.text, job->username); +#ifdef WITH_LSPP + override = 1; +#endif /* WITH_LSPP */ } else if (strcmp(attr->values[0].string.text, Classification) && strcmp(attr->values[0].string.text, "none") && @@ -1779,6 +1963,9 @@ add_job(cupsd_client_t *con, /* I - Cl "job-originating-user-name=\"%s\"", attr->values[0].string.text, attr->values[1].string.text, job->username); +#ifdef WITH_LSPP + override = 1; +#endif /* WITH_LSPP */ } } else if (strcmp(attr->values[0].string.text, Classification) && @@ -1819,8 +2006,52 @@ add_job(cupsd_client_t *con, /* I - Cl "job-sheets=\"%s\", " "job-originating-user-name=\"%s\"", Classification, job->username); +#ifdef WITH_LSPP + override = 1; +#endif /* WITH_LSPP */ } +#ifdef WITH_LSPP + if (is_lspp_config() && AuditLog != -1) + { + audit_message = NULL; + + if (userheader || userfooter) + { + if (!override) + { + /* + * The user overrode the banner, so audit it + */ + cupsdSetStringf(&audit_message, "job=%d user supplied job-sheets=%s,%s" + " using banners=%s,%s", job->id, userheader, + userfooter, attr->values[0].string.text, + (attr->num_values > 1) ? attr->values[1].string.text : "(null)"); + audit_log_user_message(AuditLog, AUDIT_LABEL_OVERRIDE, audit_message, + ServerName, NULL, NULL, 1); + } + else + { + /* + * The user tried to override the banner, audit the failure + */ + cupsdSetStringf(&audit_message, "job=%d user supplied job-sheets=%s,%s" + " ignored banners=%s,%s", job->id, userheader, + userfooter, attr->values[0].string.text, + (attr->num_values > 1) ? attr->values[1].string.text : "(null)"); + audit_log_user_message(AuditLog, AUDIT_LABEL_OVERRIDE, audit_message, + ServerName, NULL, NULL, 0); + } + cupsdClearString(&audit_message); + } + } + + if (userheader) + free(userheader); + if (userfooter) + free(userfooter); +#endif /* WITH_LSPP */ } + /* * See if we need to add the starting sheet... @@ -3591,6 +3822,128 @@ check_rss_recipient( } +#ifdef WITH_LSPP +/* + * 'check_context()' - Check SELinux security context of a user and job + */ + +static int /* O - 1 if OK, 0 if not, -1 on error */ +check_context(cupsd_client_t *con, /* I - Client connection */ + cupsd_job_t *job) /* I - Job */ +{ + int enforcing; /* is SELinux in enforcing mode */ + char filename[1024]; /* Filename of the spool file */ + security_id_t clisid; /* SELinux SID of the client */ + security_id_t jobsid; /* SELinux SID of the job */ + security_id_t filesid; /* SELinux SID of the spool file */ + struct avc_entry_ref avcref; /* AVC entry cache pointer */ + security_class_t tclass; /* SELinux security class */ + access_vector_t avr; /* SELinux access being queried */ + security_context_t spoolfilecon; /* SELinux context of the spool file */ + + + /* + * Validate the input to be sure there are contexts to work with... + */ + + if (con->scon == NULL || job->scon == NULL + || strncmp(con->scon, UNKNOWN_SL, strlen(UNKNOWN_SL)) == 0 + || strncmp(job->scon, UNKNOWN_SL, strlen(UNKNOWN_SL)) == 0) + return -1; + + if ((enforcing = security_getenforce()) == -1) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "Error while determining SELinux enforcement"); + return -1; + } + cupsdLogJob(job, CUPSD_LOG_DEBUG, + "check_context: client context %s job context %s", + con->scon, job->scon); + + + /* + * Initialize the avc engine... + */ + + static int avc_initialized = 0; + if (! avc_initialized++) + { + if (avc_init("cupsd", NULL, NULL, NULL, NULL) < 0) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, "check_context: unable avc_init"); + return -1; + } + } + if (avc_context_to_sid(con->scon, &clisid) != 0) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "check_context: unable to convert %s to SELinux sid", + con->scon); + return -1; + } + if (avc_context_to_sid(job->scon, &jobsid) != 0) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "check_context: unable to convert %s to SELinux sid", + job->scon); + return -1; + } + avc_entry_ref_init(&avcref); + tclass = SECCLASS_FILE; + avr = FILE__READ; + + /* + * Perform the check with the client as the subject, first with the job as the object + * if that fails then with the spool file as the object... + */ + + if (avc_has_perm_noaudit(clisid, jobsid, tclass, avr, &avcref, NULL) != 0) + { + cupsdLogJob(job, CUPSD_LOG_INFO, + "check_context: SELinux denied access " + "based on the client context"); + + snprintf(filename, sizeof(filename), "%s/c%05d", RequestRoot, job->id); + if (getfilecon(filename, &spoolfilecon) == -1) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "check_context: Unable to get spoolfile context"); + return -1; + } + if (avc_context_to_sid(spoolfilecon, &filesid) != 0) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "check_context: Unable to determine the " + "SELinux sid for the spool file"); + freecon(spoolfilecon); + return -1; + } + freecon(spoolfilecon); + if (avc_has_perm_noaudit(clisid, filesid, tclass, avr, &avcref, NULL) != 0) + { + cupsdLogJob(job, CUPSD_LOG_INFO, + "check_context: SELinux denied access to the spool file"); + return 0; + } + cupsdLogJob(job, CUPSD_LOG_INFO, + "check_context: SELinux allowed access to the spool file"); + return 1; + } + else + if (enforcing == 0) + cupsdLogJob(job, CUPSD_LOG_INFO, + "check_context: allowing operation due to permissive mode"); + else + cupsdLogJob(job, CUPSD_LOG_INFO, + "check_context: SELinux allowed access based on the " + "client context"); + + return 1; +} +#endif /* WITH_LSPP */ + + /* * 'check_quotas()' - Check quotas for a printer and user. */ @@ -4047,6 +4400,15 @@ copy_banner(cupsd_client_t *con, /* I - char attrname[255], /* Name of attribute */ *s; /* Pointer into name */ ipp_attribute_t *attr; /* Attribute */ +#ifdef WITH_LSPP + const char *mls_label; /* SL of print job */ + char *jobrange; /* SELinux sensitivity range */ + char *jobclearance; /* SELinux low end clearance */ + context_t jobcon; /* SELinux context of the job */ + context_t tmpcon; /* Temp context to set the level */ + security_context_t spoolcon; /* Context of the file in the spool */ +#endif /* WITH_LSPP */ + cupsdLogMessage(CUPSD_LOG_DEBUG2, @@ -4082,6 +4444,85 @@ copy_banner(cupsd_client_t *con, /* I - fchmod(cupsFileNumber(out), 0640); fchown(cupsFileNumber(out), RunUser, Group); +#ifdef WITH_LSPP + if (job->scon != NULL && + strncmp(job->scon, UNKNOWN_SL, strlen(UNKNOWN_SL)) != 0) + { + if (getfilecon(filename, &spoolcon) == -1) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "Unable to get the context of the banner file %s - %s", + filename, strerror(errno)); + job->num_files --; + return (0); + } + tmpcon = context_new(spoolcon); + jobcon = context_new(job->scon); + freecon(spoolcon); + if (!tmpcon || !jobcon) + { + if (tmpcon) + context_free(tmpcon); + if (jobcon) + context_free(jobcon); + cupsdLogJob(job, CUPSD_LOG_ERROR, + "copy_banner: Unable to get the SELinux contexts"); + job->num_files --; + return (0); + } + jobrange = (char *) context_range_get(jobcon); + if (jobrange) + { + jobrange = strdup(jobrange); + if ((jobclearance = strtok(jobrange, "-")) != NULL) + { + if (context_range_set(tmpcon, jobclearance) == -1) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "copy_banner: Unable to set the " + "level of the context for file %s - %s", + filename, strerror(errno)); + free(jobrange); + context_free(jobcon); + context_free(tmpcon); + job->num_files --; + return (0); + } + } + else + { + if (context_range_set(tmpcon, (context_range_get(jobcon))) == -1) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "copy_banner: Unable to set the " + "level of the context for file %s - %s", + filename, strerror(errno)); + free(jobrange); + context_free(jobcon); + context_free(tmpcon); + job->num_files --; + return (0); + } + } + free(jobrange); + } + if (setfilecon(filename, context_str(tmpcon)) == -1) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "copy_banner: Unable to set the " + "context of the banner file %s - %s", + filename, strerror(errno)); + context_free(jobcon); + context_free(tmpcon); + job->num_files --; + return (0); + } + cupsdLogJob(job, CUPSD_LOG_DEBUG2, "copy_banner: %s set to %s", + filename, context_str(tmpcon)); + context_free(jobcon); + context_free(tmpcon); + } +#endif /* WITH_LSPP */ /* * Try the localized banner file under the subdirectory... @@ -4176,6 +4617,24 @@ copy_banner(cupsd_client_t *con, /* I - else s = attrname; +#ifdef WITH_LSPP + if (strcmp(s, "mls-label") == 0) + { + if (job->scon != NULL && strncmp(job->scon, UNKNOWN_SL, strlen(UNKNOWN_SL)) != 0) + { + jobcon = context_new(job->scon); + if (_cups_strcasecmp(name, MLS_CONFIG) == 0) + mls_label = context_range_get(jobcon); + else if (_cups_strcasecmp(name, TE_CONFIG) == 0) + mls_label = context_type_get(jobcon); + else // default to using the whole context string + mls_label = context_str(jobcon); + cupsFilePuts(out, mls_label); + context_free(jobcon); + } + continue; + } +#endif /* WITH_LSPP */ if (!strcmp(s, "printer-name")) { cupsFilePuts(out, job->dest); @@ -6086,6 +6545,22 @@ get_job_attrs(cupsd_client_t *con, /* I exclude = cupsdGetPrivateAttrs(policy, con, printer, job->username); + +#ifdef WITH_LSPP + /* + * Check SELinux... + */ + if (is_lspp_config() && check_context(con, job) != 1) + { + /* + * Unfortunately we have to lie to the user... + */ + send_ipp_status(con, IPP_NOT_FOUND, _("Job #%d does not exist!"), jobid); + return; + } +#endif /* WITH_LSPP */ + + /* * Copy attributes... */ @@ -6485,6 +6960,11 @@ get_jobs(cupsd_client_t *con, /* I - C if (username[0] && _cups_strcasecmp(username, job->username)) continue; +#ifdef WITH_LSPP + if (is_lspp_config() && check_context(con, job) != 1) + continue; +#endif /* WITH_LSPP */ + if (count > 0) ippAddSeparator(con->response); @@ -11044,6 +11524,11 @@ validate_user(cupsd_job_t *job, /* I strlcpy(username, get_username(con), userlen); +#ifdef WITH_LSPP + if (is_lspp_config() && check_context(con, job) != 1) + return 0; +#endif /* WITH_LSPP */ + /* * Check the username against the owner... */ diff -up cups-2.0.3/scheduler/job.c.lspp cups-2.0.3/scheduler/job.c --- cups-2.0.3/scheduler/job.c.lspp 2015-06-09 17:38:42.757451683 +0200 +++ cups-2.0.3/scheduler/job.c 2015-06-09 17:38:42.810451506 +0200 @@ -13,6 +13,9 @@ * file is missing or damaged, see the license at "http://www.cups.org/". */ +/* Copyright (C) 2005 Trusted Computer Solutions, Inc. */ +/* (c) Copyright 2005-2006 Hewlett-Packard Development Company, L.P. */ + /* * Include necessary headers... */ @@ -28,6 +31,14 @@ # endif /* HAVE_IOKIT_PWR_MGT_IOPMLIBPRIVATE_H */ #endif /* __APPLE__ */ +#ifdef WITH_LSPP +#include +#include +#include +#include +#include +#include +#endif /* WITH_LSPP */ /* * Design Notes for Job Management @@ -528,6 +539,14 @@ cupsdContinueJob(cupsd_job_t *job) /* I /* PRINTER_STATE_REASONS env var */ rip_max_cache[255]; /* RIP_MAX_CACHE env variable */ +#ifdef WITH_LSPP + char *audit_message = NULL; /* Audit message string */ + context_t jobcon; /* SELinux context of the job */ + char *label_template = NULL; /* SL to put in classification + env var */ + const char *mls_label = NULL; /* SL to put in classification + env var */ +#endif /* WITH_LSPP */ cupsdLogMessage(CUPSD_LOG_DEBUG2, @@ -1064,6 +1083,67 @@ cupsdContinueJob(cupsd_job_t *job) /* I if (final_content_type[0]) envp[envc ++] = final_content_type; +#ifdef WITH_LSPP + if (is_lspp_config()) + { + if (!job->scon || strncmp(job->scon, UNKNOWN_SL, strlen(UNKNOWN_SL)) == 0) + { + if (AuditLog != -1) + { + audit_message = NULL; + cupsdSetStringf(&audit_message, "job=%d auid=%u acct=%s printer=%s title=%s", + job->id, job->auid, job->username, job->printer->name, title); + audit_log_user_message(AuditLog, AUDIT_USER_UNLABELED_EXPORT, audit_message, + ServerName, NULL, NULL, 1); + cupsdClearString(&audit_message); + } + } + else + { + jobcon = context_new(job->scon); + + if ((attr = ippFindAttribute(job->attrs, "job-sheets", IPP_TAG_NAME)) == NULL) + label_template = strdup(Classification); + else if (attr->num_values > 1 && + strcmp(attr->values[1].string.text, "none") != 0) + label_template = strdup(attr->values[1].string.text); + else + label_template = strdup(attr->values[0].string.text); + + if (_cups_strcasecmp(label_template, MLS_CONFIG) == 0) + mls_label = context_range_get(jobcon); + else if (_cups_strcasecmp(label_template, TE_CONFIG) == 0) + mls_label = context_type_get(jobcon); + else if (_cups_strcasecmp(label_template, SELINUX_CONFIG) == 0) + mls_label = context_str(jobcon); + else + mls_label = label_template; + + if (mls_label && (PerPageLabels || banner_page)) + { + snprintf(classification, sizeof(classification), "CLASSIFICATION=LSPP:%s", mls_label); + envp[envc ++] = classification; + } + + if ((AuditLog != -1) && !banner_page) + { + audit_message = NULL; + cupsdSetStringf(&audit_message, "job=%d auid=%u acct=%s printer=%s title=%s" + " obj=%s label=%s", job->id, job->auid, job->username, + job->printer->name, title, job->scon, mls_label?mls_label:"none"); + audit_log_user_message(AuditLog, AUDIT_USER_LABELED_EXPORT, audit_message, + ServerName, NULL, NULL, 1); + cupsdClearString(&audit_message); + } + context_free(jobcon); + free(label_template); + } + } + else + /* + * Fall through to the non-LSPP behavior + */ +#endif /* WITH_LSPP */ if (Classification && !banner_page) { if ((attr = ippFindAttribute(job->attrs, "job-sheets", @@ -1857,6 +1937,22 @@ cupsdLoadJob(cupsd_job_t *job) /* I - J ippSetString(job->attrs, &job->reasons, 0, "none"); } +#ifdef WITH_LSPP + if ((attr = ippFindAttribute(job->attrs, "security-context", IPP_TAG_NAME)) != NULL) + cupsdSetString(&job->scon, attr->values[0].string.text); + else if (is_lspp_config()) + { + /* + * There was no security context so delete the job + */ + cupsdLogJob(job, CUPSD_LOG_ERROR, + "Missing or bad security-context attribute " + "in control file \"%s\"!", + jobfile); + goto error; + } +#endif /* WITH_LSPP */ + job->sheets = ippFindAttribute(job->attrs, "job-media-sheets-completed", IPP_TAG_INTEGER); job->job_sheets = ippFindAttribute(job->attrs, "job-sheets", IPP_TAG_NAME); @@ -2258,6 +2354,14 @@ cupsdSaveJob(cupsd_job_t *job) /* I - J { char filename[1024]; /* Job control filename */ cups_file_t *fp; /* Job file */ +#ifdef WITH_LSPP + security_context_t spoolcon; /* context of the job control file */ + context_t jobcon; /* contex_t container for job->scon */ + context_t tmpcon; /* Temp context to swap the level */ + char *jobclearance; /* SELinux low end clearance */ + const char *jobrange; /* SELinux sensitivity range */ + char *jobrange_copy; /* SELinux sensitivity range */ +#endif /* WITH_LSPP */ cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdSaveJob(job=%p(%d)): job->attrs=%p", @@ -2270,6 +2374,78 @@ cupsdSaveJob(cupsd_job_t *job) /* I - J fchown(cupsFileNumber(fp), RunUser, Group); +#ifdef WITH_LSPP + if (job->scon && strncmp(job->scon, UNKNOWN_SL, strlen(UNKNOWN_SL)) != 0) + { + if (getfilecon(filename, &spoolcon) == -1) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "Unable to get context of job control file \"%s\" - %s.", + filename, strerror(errno)); + return; + } + jobcon = context_new(job->scon); + tmpcon = context_new(spoolcon); + freecon(spoolcon); + if (!jobcon || !tmpcon) + { + if (jobcon) + context_free(jobcon); + if (tmpcon) + context_free(tmpcon); + cupsdLogJob(job, CUPSD_LOG_ERROR, "Unable to get SELinux contexts"); + return; + } + jobrange = context_range_get(jobcon); + if (jobrange) + { + jobrange_copy = strdup(jobrange); + if ((jobclearance = strtok(jobrange_copy, "-")) != NULL) + { + if (context_range_set(tmpcon, jobclearance) == -1) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "Unable to set the range for " + "job control file \"%s\" - %s.", + filename, strerror(errno)); + free(jobrange_copy); + context_free(tmpcon); + context_free(jobcon); + return; + } + } + else + { + if (context_range_set(tmpcon, (context_range_get(jobcon))) == -1) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "Unable to set the range for " + "job control file \"%s\" - %s.", + filename, strerror(errno)); + free(jobrange_copy); + context_free(tmpcon); + context_free(jobcon); + return; + } + } + free(jobrange_copy); + } + if (setfilecon(filename, context_str(tmpcon)) == -1) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "Unable to set context of job control file \"%s\" - %s.", + filename, strerror(errno)); + context_free(tmpcon); + context_free(jobcon); + return; + } + cupsdLogJob(job, CUPSD_LOG_DEBUG2, "New spool file context=%s", + job, context_str(tmpcon)); + context_free(tmpcon); + context_free(jobcon); + } +#endif /* WITH_LSPP */ + job->attrs->state = IPP_IDLE; if (ippWriteIO(fp, (ipp_iocb_t)cupsFileWrite, 1, NULL, @@ -3852,6 +4028,19 @@ get_options(cupsd_job_t *job, /* I - Jo banner_page) continue; +#ifdef WITH_LSPP + /* + * In LSPP mode refuse to honor the page-label + */ + if (is_lspp_config() && + !strcmp(attr->name, "page-label")) + { + cupsdLogJob(job, CUPSD_LOG_DEBUG, + "Ignoring page-label option due to LSPP mode"); + continue; + } +#endif /* WITH_LSPP */ + /* * Otherwise add them to the list... */ @@ -4596,6 +4785,18 @@ start_job(cupsd_job_t *job, /* I - cupsd_printer_t *printer) /* I - Printer to print job */ { const char *filename; /* Support filename */ +#ifdef WITH_LSPP + char *audit_message = NULL; /* Audit message string */ + char *printerfile = NULL; /* Device file pointed to by the printer */ + security_id_t clisid; /* SELinux SID for the client */ + security_id_t psid; /* SELinux SID for the printer */ + context_t printercon; /* Printer's context string */ + struct stat printerstat; /* Printer's stat buffer */ + security_context_t devcon; /* Printer's SELinux context */ + struct avc_entry_ref avcref; /* Pointer to the access vector cache */ + security_class_t tclass; /* Object class for the SELinux check */ + access_vector_t avr; /* Access method being requested */ +#endif /* WITH_LSPP */ ipp_attribute_t *cancel_after = ippFindAttribute(job->attrs, "job-cancel-after", IPP_TAG_INTEGER); @@ -4772,6 +4973,113 @@ start_job(cupsd_job_t *job, /* I - fcntl(job->side_pipes[1], F_SETFD, fcntl(job->side_pipes[1], F_GETFD) | FD_CLOEXEC); +#ifdef WITH_LSPP + if (is_lspp_config()) + { + /* + * Perform an access check before printing, but only if the printer starts with /dev/ + */ + printerfile = strstr(printer->device_uri, "/dev/"); + if (printerfile == NULL && (strncmp(printer->device_uri, "file:/", 6) == 0)) + printerfile = printer->device_uri + strlen("file:"); + + if (printerfile != NULL) + { + cupsdLogJob(job, CUPSD_LOG_DEBUG, + "Attempting to check access on printer device %s", + printerfile); + if (lstat(printerfile, &printerstat) < 0) + { + if (errno != ENOENT) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "Unable to stat the printer"); + cupsdSetJobState(job, IPP_JOB_ABORTED, CUPSD_JOB_DEFAULT, NULL); + return ; + } + /* + * The printer does not exist, so for now assume it's a FileDevice + */ + tclass = SECCLASS_FILE; + avr = FILE__WRITE; + } + else if (S_ISCHR(printerstat.st_mode)) + { + tclass = SECCLASS_CHR_FILE; + avr = CHR_FILE__WRITE; + } + else if (S_ISREG(printerstat.st_mode)) + { + tclass = SECCLASS_FILE; + avr = FILE__WRITE; + } + else + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "StartJob: Printer is not a character device or " + "regular file"); + cupsdSetJobState(job, IPP_JOB_ABORTED, CUPSD_JOB_DEFAULT, NULL); + return ; + } + static int avc_initialized = 0; + if (!avc_initialized++) + avc_init("cupsd_dequeue_", NULL, NULL, NULL, NULL); + avc_entry_ref_init(&avcref); + if (avc_context_to_sid(job->scon, &clisid) != 0) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "Unable to determine the SELinux sid for the job"); + cupsdSetJobState(job, IPP_JOB_ABORTED, CUPSD_JOB_DEFAULT, NULL); + return ; + } + if (getfilecon(printerfile, &devcon) == -1) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "Unable to get the SELinux context of %s", + printerfile); + cupsdSetJobState(job, IPP_JOB_ABORTED, CUPSD_JOB_DEFAULT, NULL); + return ; + } + printercon = context_new(devcon); + cupsdLogJob(job, CUPSD_LOG_DEBUG, + "Printer context %s client context %s", + context_str(printercon), job->scon); + context_free(printercon); + + if (avc_context_to_sid(devcon, &psid) != 0) + { + cupsdLogJob(job, CUPSD_LOG_ERROR, + "Unable to determine the SELinux sid for the printer"); + freecon(devcon); + cupsdSetJobState(job, IPP_JOB_ABORTED, CUPSD_JOB_DEFAULT, NULL); + return ; + } + freecon(devcon); + + if (avc_has_perm(clisid, psid, tclass, avr, &avcref, NULL) != 0) + { + /* + * The access check failed, so cancel the job and send an audit message + */ + if (AuditLog != -1) + { + audit_message = NULL; + cupsdSetStringf(&audit_message, "job=%d auid=%u acct=%s obj=%s canceled" + " unable to access printer=%s", job->id, + job->auid, (job->username)?job->username:"?", job->scon, printer->name); + audit_log_user_message(AuditLog, AUDIT_USER_LABELED_EXPORT, audit_message, + ServerName, NULL, NULL, 0); + cupsdClearString(&audit_message); + } + + cupsdSetJobState(job, IPP_JOB_ABORTED, CUPSD_JOB_DEFAULT, NULL); + + return ; + } + } + } +#endif /* WITH_LSPP */ + /* * Now start the first file in the job... */ diff -up cups-2.0.3/scheduler/job.h.lspp cups-2.0.3/scheduler/job.h --- cups-2.0.3/scheduler/job.h.lspp 2014-07-31 02:02:30.000000000 +0200 +++ cups-2.0.3/scheduler/job.h 2015-06-09 17:38:42.810451506 +0200 @@ -13,6 +13,13 @@ * file is missing or damaged, see the license at "http://www.cups.org/". */ +/* Copyright (C) 2005 Trusted Computer Solutions, Inc. */ +/* (c) Copyright 2005-2006 Hewlett-Packard Development Company, L.P. */ + +#ifdef WITH_LSPP +#include +#endif /* WITH_LSPP */ + /* * Constants... */ @@ -89,6 +96,10 @@ struct cupsd_job_s /**** Job request * int progress; /* Printing progress */ int num_keywords; /* Number of PPD keywords */ cups_option_t *keywords; /* PPD keywords */ +#ifdef WITH_LSPP + security_context_t scon; /* Security context of job */ + uid_t auid; /* Audit loginuid for this job */ +#endif /* WITH_LSPP */ }; typedef struct cupsd_joblog_s /**** Job log message ****/ diff -up cups-2.0.3/scheduler/main.c.lspp cups-2.0.3/scheduler/main.c --- cups-2.0.3/scheduler/main.c.lspp 2015-06-09 17:38:42.792451566 +0200 +++ cups-2.0.3/scheduler/main.c 2015-06-09 17:38:42.810451506 +0200 @@ -56,6 +56,9 @@ extern int launch_activate_socket(const # include #endif /* HAVE_SYS_PARAM_H */ +#ifdef WITH_LSPP +# include +#endif /* WITH_LSPP */ /* * Local functions... @@ -120,6 +123,9 @@ main(int argc, /* I - Number of comm #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) struct sigaction action; /* Actions for POSIX signals */ #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ +#if WITH_LSPP + auditfail_t failmode; /* Action for audit_open failure */ +#endif /* WITH_LSPP */ #ifdef __APPLE__ int use_sysman = 1; /* Use system management functions? */ #else @@ -498,6 +504,25 @@ main(int argc, /* I - Number of comm exit(errno); } +#ifdef WITH_LSPP + if ((AuditLog = audit_open()) < 0 ) + { + if (get_auditfail_action(&failmode) == 0) + { + if (failmode == FAIL_LOG) + { + cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to connect to audit subsystem."); + AuditLog = -1; + } + else if (failmode == FAIL_TERMINATE) + { + fprintf(stderr, "cupsd: unable to start auditing, terminating"); + return -1; + } + } + } +#endif /* WITH_LSPP */ + /* * Set the timezone info... */ @@ -1161,6 +1186,11 @@ main(int argc, /* I - Number of comm cupsdStopSelect(); +#ifdef WITH_LSPP + if (AuditLog != -1) + audit_close(AuditLog); +#endif /* WITH_LSPP */ + return (!stop_scheduler); } diff -up cups-2.0.3/scheduler/printers.c.lspp cups-2.0.3/scheduler/printers.c --- cups-2.0.3/scheduler/printers.c.lspp 2015-06-09 17:38:42.727451783 +0200 +++ cups-2.0.3/scheduler/printers.c 2015-06-09 17:38:42.811451502 +0200 @@ -13,6 +13,8 @@ * file is missing or damaged, see the license at "http://www.cups.org/". */ +/* (c) Copyright 2005-2006 Hewlett-Packard Development Company, L.P. */ + /* * Include necessary headers... */ @@ -37,6 +39,10 @@ # include #endif /* __APPLE__ */ +#ifdef WITH_LSPP +# include +# include +#endif /* WITH_LSPP */ /* * Local functions... @@ -2025,6 +2031,13 @@ cupsdSetPrinterAttrs(cupsd_printer_t *p) ipp_attribute_t *attr; /* Attribute data */ char *name, /* Current user/group name */ *filter; /* Current filter */ +#ifdef WITH_LSPP + char *audit_message; /* Audit message string */ + char *printerfile; /* Path to a local printer dev */ + char *rangestr; /* Printer's range if its available */ + security_context_t devcon; /* Printer SELinux context */ + context_t printercon; /* context_t for the printer */ +#endif /* WITH_LSPP */ DEBUG_printf(("cupsdSetPrinterAttrs: entering name = %s, type = %x\n", p->name, @@ -2145,6 +2158,45 @@ cupsdSetPrinterAttrs(cupsd_printer_t *p) attr->values[1].string.text = _cupsStrAlloc(Classification ? Classification : p->job_sheets[1]); } +#ifdef WITH_LSPP + if (AuditLog != -1) + { + audit_message = NULL; + rangestr = NULL; + printercon = 0; + printerfile = strstr(p->device_uri, "/dev/"); + if (printerfile == NULL && (strncmp(p->device_uri, "file:/", 6) == 0)) + printerfile = p->device_uri + strlen("file:"); + + if (printerfile != NULL) + { + if (getfilecon(printerfile, &devcon) == -1) + { + if(is_selinux_enabled()) + cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSetPrinterAttrs: Unable to get printer context"); + } + else + { + printercon = context_new(devcon); + freecon(devcon); + } + } + + if (printercon && context_range_get(printercon)) + rangestr = strdup(context_range_get(printercon)); + else + rangestr = strdup("unknown"); + + cupsdSetStringf(&audit_message, "printer=%s uri=%s banners=%s,%s range=%s", + p->name, p->sanitized_device_uri, p->job_sheets[0], p->job_sheets[1], rangestr); + audit_log_user_message(AuditLog, AUDIT_LABEL_LEVEL_CHANGE, audit_message, + ServerName, NULL, NULL, 1); + if (printercon) + context_free(printercon); + free(rangestr); + cupsdClearString(&audit_message); + } +#endif /* WITH_LSPP */ } p->raw = 0;