787 lines
20 KiB
C
787 lines
20 KiB
C
/*
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* Copyright (c) 2000-2005, 2007-2011
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* Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Sponsored in part by the Defense Advanced Research Projects
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* Agency (DARPA) and Air Force Research Laboratory, Air Force
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* Materiel Command, USAF, under agreement number F39502-99-1-0512.
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*/
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#include <config.h>
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#ifdef STDC_HEADERS
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# include <stdlib.h>
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# include <stddef.h>
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#else
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# ifdef HAVE_STDLIB_H
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# include <stdlib.h>
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# endif
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#endif /* STDC_HEADERS */
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif /* HAVE_STRING_H */
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif /* HAVE_STRINGS_H */
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif /* HAVE_UNISTD_H */
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#include <ctype.h>
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#include <errno.h>
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#include <pwd.h>
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#include "sudoers.h"
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/*
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* Flags used in rebuild_env()
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*/
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#undef DID_TERM
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#define DID_TERM 0x0001
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#undef DID_PATH
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#define DID_PATH 0x0002
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#undef DID_HOME
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#define DID_HOME 0x0004
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#undef DID_SHELL
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#define DID_SHELL 0x0008
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#undef DID_LOGNAME
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#define DID_LOGNAME 0x0010
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#undef DID_USER
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#define DID_USER 0x0020
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#undef DID_USERNAME
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#define DID_USERNAME 0x0040
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#undef DID_MAIL
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#define DID_MAIL 0x0080
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#undef DID_MAX
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#define DID_MAX 0x00ff
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#undef KEPT_TERM
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#define KEPT_TERM 0x0100
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#undef KEPT_PATH
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#define KEPT_PATH 0x0200
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#undef KEPT_HOME
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#define KEPT_HOME 0x0400
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#undef KEPT_SHELL
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#define KEPT_SHELL 0x0800
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#undef KEPT_LOGNAME
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#define KEPT_LOGNAME 0x1000
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#undef KEPT_USER
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#define KEPT_USER 0x2000
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#undef KEPT_USERNAME
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#define KEPT_USERNAME 0x4000
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#undef KEPT_MAIL
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#define KEPT_MAIL 0x8000
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#undef KEPT_MAX
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#define KEPT_MAX 0xff00
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struct environment {
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char **envp; /* pointer to the new environment */
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size_t env_size; /* size of new_environ in char **'s */
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size_t env_len; /* number of slots used, not counting NULL */
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};
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/*
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* Prototypes
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*/
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static void sudo_setenv(const char *, const char *, int);
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static void sudo_putenv(char *, int, int);
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/*
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* Copy of the sudo-managed environment.
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*/
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static struct environment env;
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/*
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* Default table of "bad" variables to remove from the environment.
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* XXX - how to omit TERMCAP if it starts with '/'?
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*/
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static const char *initial_badenv_table[] = {
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"IFS",
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"CDPATH",
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"LOCALDOMAIN",
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"RES_OPTIONS",
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"HOSTALIASES",
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"NLSPATH",
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"PATH_LOCALE",
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"LD_*",
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"_RLD*",
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#ifdef __hpux
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"SHLIB_PATH",
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#endif /* __hpux */
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#ifdef _AIX
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"LDR_*",
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"LIBPATH",
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"AUTHSTATE",
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#endif
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#ifdef __APPLE__
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"DYLD_*",
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#endif
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#ifdef HAVE_KERB4
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"KRB_CONF*",
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"KRBCONFDIR",
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"KRBTKFILE",
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#endif /* HAVE_KERB4 */
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#ifdef HAVE_KERB5
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"KRB5_CONFIG*",
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"KRB5_KTNAME",
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#endif /* HAVE_KERB5 */
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#ifdef HAVE_SECURID
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"VAR_ACE",
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"USR_ACE",
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"DLC_ACE",
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#endif /* HAVE_SECURID */
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"TERMINFO", /* terminfo, exclusive path to terminfo files */
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"TERMINFO_DIRS", /* terminfo, path(s) to terminfo files */
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"TERMPATH", /* termcap, path(s) to termcap files */
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"TERMCAP", /* XXX - only if it starts with '/' */
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"ENV", /* ksh, file to source before script runs */
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"BASH_ENV", /* bash, file to source before script runs */
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"PS4", /* bash, prefix for lines in xtrace mode */
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"GLOBIGNORE", /* bash, globbing patterns to ignore */
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"SHELLOPTS", /* bash, extra command line options */
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"JAVA_TOOL_OPTIONS", /* java, extra command line options */
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"PERLIO_DEBUG ", /* perl, debugging output file */
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"PERLLIB", /* perl, search path for modules/includes */
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"PERL5LIB", /* perl 5, search path for modules/includes */
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"PERL5OPT", /* perl 5, extra command line options */
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"PERL5DB", /* perl 5, command used to load debugger */
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"FPATH", /* ksh, search path for functions */
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"NULLCMD", /* zsh, command for null file redirection */
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"READNULLCMD", /* zsh, command for null file redirection */
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"ZDOTDIR", /* zsh, search path for dot files */
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"TMPPREFIX", /* zsh, prefix for temporary files */
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"PYTHONHOME", /* python, module search path */
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"PYTHONPATH", /* python, search path */
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"PYTHONINSPECT", /* python, allow inspection */
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"PYTHONUSERBASE", /* python, per user site-packages directory */
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"RUBYLIB", /* ruby, library load path */
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"RUBYOPT", /* ruby, extra command line options */
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NULL
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};
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/*
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* Default table of variables to check for '%' and '/' characters.
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*/
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static const char *initial_checkenv_table[] = {
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"COLORTERM",
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"LANG",
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"LANGUAGE",
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"LC_*",
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"LINGUAS",
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"TERM",
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NULL
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};
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/*
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* Default table of variables to preserve in the environment.
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*/
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static const char *initial_keepenv_table[] = {
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"COLORS",
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"DISPLAY",
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"HOSTNAME",
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"KRB5CCNAME",
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"LS_COLORS",
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"PATH",
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"PS1",
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"PS2",
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"TZ",
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"XAUTHORITY",
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"XAUTHORIZATION",
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#ifdef _AIX
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"ODMDIR",
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#endif
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NULL
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};
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/*
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* Initialize env based on envp.
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*/
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void
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env_init(char * const envp[])
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{
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char * const *ep;
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size_t len;
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for (ep = envp; *ep != NULL; ep++)
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continue;
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len = (size_t)(ep - envp);
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env.env_len = len;
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env.env_size = len + 1 + 128;
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env.envp = emalloc2(env.env_size, sizeof(char *));
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#ifdef ENV_DEBUG
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memset(env.envp, 0, env.env_size * sizeof(char *));
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#endif
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memcpy(env.envp, envp, len * sizeof(char *));
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env.envp[len] = '\0';
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}
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char **
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env_get(void)
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{
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return env.envp;
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}
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/*
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* Similar to setenv(3) but operates on sudo's private copy of the environment
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* (not environ) and it always overwrites. The dupcheck param determines
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* whether we need to verify that the variable is not already set.
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*/
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static void
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sudo_setenv(const char *var, const char *val, int dupcheck)
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{
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char *estring;
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size_t esize;
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esize = strlen(var) + 1 + strlen(val) + 1;
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estring = emalloc(esize);
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/* Build environment string and insert it. */
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if (strlcpy(estring, var, esize) >= esize ||
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strlcat(estring, "=", esize) >= esize ||
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strlcat(estring, val, esize) >= esize) {
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errorx(1, "internal error, sudo_setenv() overflow");
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}
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sudo_putenv(estring, dupcheck, TRUE);
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}
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/*
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* Similar to putenv(3) but operates on sudo's private copy of the
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* environment (not environ) and it always overwrites. The dupcheck param
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* determines whether we need to verify that the variable is not already set.
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* Will only overwrite an existing variable if overwrite is set.
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*/
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static void
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sudo_putenv(char *str, int dupcheck, int overwrite)
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{
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char **ep;
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size_t len;
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int found = FALSE;
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/* Make sure there is room for the new entry plus a NULL. */
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if (env.env_len + 2 > env.env_size) {
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env.env_size += 128;
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env.envp = erealloc3(env.envp, env.env_size, sizeof(char *));
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#ifdef ENV_DEBUG
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memset(env.envp + env.env_len, 0,
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(env.env_size - env.env_len) * sizeof(char *));
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#endif
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}
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#ifdef ENV_DEBUG
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if (env.envp[env.env_len] != NULL)
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errorx(1, "sudo_putenv: corrupted envp, len mismatch");
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#endif
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if (dupcheck) {
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len = (strchr(str, '=') - str) + 1;
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for (ep = env.envp; !found && *ep != NULL; ep++) {
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if (strncmp(str, *ep, len) == 0) {
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if (overwrite)
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*ep = str;
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found = TRUE;
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}
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}
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/* Prune out duplicate variables. */
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if (found && overwrite) {
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while (*ep != NULL) {
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if (strncmp(str, *ep, len) == 0) {
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char **cur = ep;
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while ((*cur = *(cur + 1)) != NULL)
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cur++;
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} else {
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ep++;
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}
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}
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env.env_len = ep - env.envp;
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}
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}
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if (!found) {
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ep = env.envp + env.env_len;
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env.env_len++;
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*ep++ = str;
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*ep = NULL;
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}
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}
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/*
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* Check the env_delete blacklist.
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* Returns TRUE if the variable was found, else false.
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*/
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static int
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matches_env_delete(const char *var)
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{
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struct list_member *cur;
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size_t len;
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int iswild, match = FALSE;
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/* Skip anything listed in env_delete. */
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for (cur = def_env_delete; cur; cur = cur->next) {
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len = strlen(cur->value);
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/* Deal with '*' wildcard */
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if (cur->value[len - 1] == '*') {
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len--;
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iswild = TRUE;
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} else
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iswild = FALSE;
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if (strncmp(cur->value, var, len) == 0 &&
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(iswild || var[len] == '=')) {
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match = TRUE;
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break;
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}
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}
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return match;
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}
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/*
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* Apply the env_check list.
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* Returns TRUE if the variable is allowed, FALSE if denied
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* or -1 if no match.
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*/
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static int
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matches_env_check(const char *var)
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{
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struct list_member *cur;
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size_t len;
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int iswild, keepit = -1;
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for (cur = def_env_check; cur; cur = cur->next) {
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len = strlen(cur->value);
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/* Deal with '*' wildcard */
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if (cur->value[len - 1] == '*') {
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len--;
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iswild = TRUE;
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} else
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iswild = FALSE;
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if (strncmp(cur->value, var, len) == 0 &&
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(iswild || var[len] == '=')) {
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keepit = !strpbrk(var, "/%");
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break;
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}
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}
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return keepit;
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}
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/*
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* Check the env_keep list.
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* Returns TRUE if the variable is allowed else FALSE.
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*/
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static int
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matches_env_keep(const char *var)
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{
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struct list_member *cur;
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size_t len;
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int iswild, keepit = FALSE;
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for (cur = def_env_keep; cur; cur = cur->next) {
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len = strlen(cur->value);
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/* Deal with '*' wildcard */
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if (cur->value[len - 1] == '*') {
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len--;
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iswild = TRUE;
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} else
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iswild = FALSE;
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if (strncmp(cur->value, var, len) == 0 &&
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(iswild || var[len] == '=')) {
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keepit = TRUE;
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break;
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}
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}
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return keepit;
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}
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/*
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* Build a new environment and ether clear potentially dangerous
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* variables from the old one or start with a clean slate.
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* Also adds sudo-specific variables (SUDO_*).
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*/
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void
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rebuild_env(void)
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{
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char **old_envp, **ep, *cp, *ps1;
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char idbuf[MAX_UID_T_LEN];
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unsigned int didvar;
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int reset_home = FALSE;
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/*
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* Either clean out the environment or reset to a safe default.
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*/
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ps1 = NULL;
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didvar = 0;
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env.env_len = 0;
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env.env_size = 128;
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old_envp = env.envp;
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env.envp = emalloc2(env.env_size, sizeof(char *));
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#ifdef ENV_DEBUG
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memset(env.envp, 0, env.env_size * sizeof(char *));
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#endif
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/* Reset HOME based on target user if configured to. */
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if (ISSET(sudo_mode, MODE_RUN)) {
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if (def_always_set_home ||
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ISSET(sudo_mode, MODE_RESET_HOME | MODE_LOGIN_SHELL) ||
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(ISSET(sudo_mode, MODE_SHELL) && def_set_home))
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reset_home = TRUE;
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}
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if (def_env_reset || ISSET(sudo_mode, MODE_LOGIN_SHELL)) {
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/* Pull in vars we want to keep from the old environment. */
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for (ep = old_envp; *ep; ep++) {
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int keepit;
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/* Skip variables with values beginning with () (bash functions) */
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if ((cp = strchr(*ep, '=')) != NULL) {
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if (strncmp(cp, "=() ", 3) == 0)
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continue;
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}
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/*
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* First check certain variables for '%' and '/' characters.
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* If no match there, check the keep list.
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* If nothing matched, we remove it from the environment.
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*/
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keepit = matches_env_check(*ep);
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if (keepit == -1)
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keepit = matches_env_keep(*ep);
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/* For SUDO_PS1 -> PS1 conversion. */
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if (strncmp(*ep, "SUDO_PS1=", 8) == 0)
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ps1 = *ep + 5;
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if (keepit) {
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/* Preserve variable. */
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switch (**ep) {
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case 'H':
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if (strncmp(*ep, "HOME=", 5) == 0)
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SET(didvar, DID_HOME);
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break;
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case 'L':
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if (strncmp(*ep, "LOGNAME=", 8) == 0)
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SET(didvar, DID_LOGNAME);
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break;
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case 'M':
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if (strncmp(*ep, "MAIL=", 5) == 0)
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SET(didvar, DID_MAIL);
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break;
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case 'P':
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if (strncmp(*ep, "PATH=", 5) == 0)
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SET(didvar, DID_PATH);
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break;
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case 'S':
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if (strncmp(*ep, "SHELL=", 6) == 0)
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SET(didvar, DID_SHELL);
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break;
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case 'T':
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if (strncmp(*ep, "TERM=", 5) == 0)
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SET(didvar, DID_TERM);
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break;
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case 'U':
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if (strncmp(*ep, "USER=", 5) == 0)
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SET(didvar, DID_USER);
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if (strncmp(*ep, "USERNAME=", 5) == 0)
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SET(didvar, DID_USERNAME);
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break;
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}
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sudo_putenv(*ep, FALSE, FALSE);
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}
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}
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didvar |= didvar << 8; /* convert DID_* to KEPT_* */
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|
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/*
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* Add in defaults. In -i mode these come from the runas user,
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* otherwise they may be from the user's environment (depends
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* on sudoers options).
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|
*/
|
|
if (ISSET(sudo_mode, MODE_LOGIN_SHELL)) {
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sudo_setenv("SHELL", runas_pw->pw_shell, ISSET(didvar, DID_SHELL));
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sudo_setenv("LOGNAME", runas_pw->pw_name,
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ISSET(didvar, DID_LOGNAME));
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sudo_setenv("USER", runas_pw->pw_name, ISSET(didvar, DID_USER));
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sudo_setenv("USERNAME", runas_pw->pw_name,
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ISSET(didvar, DID_USERNAME));
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} else {
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if (!ISSET(didvar, DID_SHELL))
|
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sudo_setenv("SHELL", sudo_user.pw->pw_shell, FALSE);
|
|
if (!ISSET(didvar, DID_LOGNAME))
|
|
sudo_setenv("LOGNAME", user_name, FALSE);
|
|
if (!ISSET(didvar, DID_USER))
|
|
sudo_setenv("USER", user_name, FALSE);
|
|
if (!ISSET(didvar, DID_USERNAME))
|
|
sudo_setenv("USERNAME", user_name, FALSE);
|
|
}
|
|
|
|
/* If we didn't keep HOME, reset it based on target user. */
|
|
if (!ISSET(didvar, KEPT_HOME))
|
|
reset_home = TRUE;
|
|
|
|
/*
|
|
* Set MAIL to target user in -i mode or if MAIL is not preserved
|
|
* from user's environment.
|
|
*/
|
|
if (ISSET(sudo_mode, MODE_LOGIN_SHELL) || !ISSET(didvar, KEPT_MAIL)) {
|
|
cp = _PATH_MAILDIR;
|
|
if (cp[sizeof(_PATH_MAILDIR) - 2] == '/')
|
|
easprintf(&cp, "MAIL=%s%s", _PATH_MAILDIR, runas_pw->pw_name);
|
|
else
|
|
easprintf(&cp, "MAIL=%s/%s", _PATH_MAILDIR, runas_pw->pw_name);
|
|
sudo_putenv(cp, ISSET(didvar, DID_MAIL), TRUE);
|
|
}
|
|
} else {
|
|
/*
|
|
* Copy environ entries as long as they don't match env_delete or
|
|
* env_check.
|
|
*/
|
|
for (ep = old_envp; *ep; ep++) {
|
|
int okvar;
|
|
|
|
/* Skip variables with values beginning with () (bash functions) */
|
|
if ((cp = strchr(*ep, '=')) != NULL) {
|
|
if (strncmp(cp, "=() ", 3) == 0)
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* First check variables against the blacklist in env_delete.
|
|
* If no match there check for '%' and '/' characters.
|
|
*/
|
|
okvar = matches_env_delete(*ep) != TRUE;
|
|
if (okvar)
|
|
okvar = matches_env_check(*ep) != FALSE;
|
|
|
|
if (okvar) {
|
|
if (strncmp(*ep, "SUDO_PS1=", 9) == 0)
|
|
ps1 = *ep + 5;
|
|
else if (strncmp(*ep, "PATH=", 5) == 0)
|
|
SET(didvar, DID_PATH);
|
|
else if (strncmp(*ep, "TERM=", 5) == 0)
|
|
SET(didvar, DID_TERM);
|
|
sudo_putenv(*ep, FALSE, FALSE);
|
|
}
|
|
}
|
|
}
|
|
/* Replace the PATH envariable with a secure one? */
|
|
if (def_secure_path && !user_is_exempt()) {
|
|
sudo_setenv("PATH", def_secure_path, TRUE);
|
|
SET(didvar, DID_PATH);
|
|
}
|
|
|
|
/* Set $USER, $LOGNAME and $USERNAME to target if "set_logname" is true. */
|
|
if (def_set_logname && !ISSET(sudo_mode, MODE_LOGIN_SHELL)) {
|
|
if (!ISSET(didvar, KEPT_LOGNAME))
|
|
sudo_setenv("LOGNAME", runas_pw->pw_name, TRUE);
|
|
if (!ISSET(didvar, KEPT_USER))
|
|
sudo_setenv("USER", runas_pw->pw_name, TRUE);
|
|
if (!ISSET(didvar, KEPT_USERNAME))
|
|
sudo_setenv("USERNAME", runas_pw->pw_name, TRUE);
|
|
}
|
|
|
|
/* Set $HOME to target user if not preserving user's value. */
|
|
if (reset_home)
|
|
sudo_setenv("HOME", runas_pw->pw_dir, TRUE);
|
|
|
|
/* Provide default values for $TERM and $PATH if they are not set. */
|
|
if (!ISSET(didvar, DID_TERM))
|
|
sudo_putenv("TERM=unknown", FALSE, FALSE);
|
|
if (!ISSET(didvar, DID_PATH))
|
|
sudo_setenv("PATH", _PATH_STDPATH, FALSE);
|
|
|
|
/* Set PS1 if SUDO_PS1 is set. */
|
|
if (ps1 != NULL)
|
|
sudo_putenv(ps1, TRUE, TRUE);
|
|
|
|
/* Add the SUDO_COMMAND envariable (cmnd + args). */
|
|
if (user_args) {
|
|
easprintf(&cp, "%s %s", user_cmnd, user_args);
|
|
sudo_setenv("SUDO_COMMAND", cp, TRUE);
|
|
efree(cp);
|
|
} else {
|
|
sudo_setenv("SUDO_COMMAND", user_cmnd, TRUE);
|
|
}
|
|
|
|
/* Add the SUDO_USER, SUDO_UID, SUDO_GID environment variables. */
|
|
sudo_setenv("SUDO_USER", user_name, TRUE);
|
|
snprintf(idbuf, sizeof(idbuf), "%u", (unsigned int) user_uid);
|
|
sudo_setenv("SUDO_UID", idbuf, TRUE);
|
|
snprintf(idbuf, sizeof(idbuf), "%u", (unsigned int) user_gid);
|
|
sudo_setenv("SUDO_GID", idbuf, TRUE);
|
|
|
|
/* Free old environment. */
|
|
efree(old_envp);
|
|
}
|
|
|
|
void
|
|
insert_env_vars(char * const envp[])
|
|
{
|
|
char * const *ep;
|
|
|
|
if (envp == NULL)
|
|
return;
|
|
|
|
/* Add user-specified environment variables. */
|
|
for (ep = envp; *ep != NULL; ep++)
|
|
sudo_putenv(*ep, TRUE, TRUE);
|
|
}
|
|
|
|
/*
|
|
* Validate the list of environment variables passed in on the command
|
|
* line against env_delete, env_check, and env_keep.
|
|
* Calls log_error() if any specified variables are not allowed.
|
|
*/
|
|
void
|
|
validate_env_vars(char * const env_vars[])
|
|
{
|
|
char * const *ep;
|
|
char *eq, *bad = NULL;
|
|
size_t len, blen = 0, bsize = 0;
|
|
int okvar;
|
|
|
|
if (env_vars == NULL)
|
|
return;
|
|
|
|
/* Add user-specified environment variables. */
|
|
for (ep = env_vars; *ep != NULL; ep++) {
|
|
if (def_secure_path && !user_is_exempt() &&
|
|
strncmp(*ep, "PATH=", 5) == 0) {
|
|
okvar = FALSE;
|
|
} else if (def_env_reset) {
|
|
okvar = matches_env_check(*ep);
|
|
if (okvar == -1)
|
|
okvar = matches_env_keep(*ep);
|
|
} else {
|
|
okvar = matches_env_delete(*ep) == FALSE;
|
|
if (okvar == FALSE)
|
|
okvar = matches_env_check(*ep) != FALSE;
|
|
}
|
|
if (okvar == FALSE) {
|
|
/* Not allowed, add to error string, allocating as needed. */
|
|
if ((eq = strchr(*ep, '=')) != NULL)
|
|
*eq = '\0';
|
|
len = strlen(*ep) + 2;
|
|
if (blen + len >= bsize) {
|
|
do {
|
|
bsize += 1024;
|
|
} while (blen + len >= bsize);
|
|
bad = erealloc(bad, bsize);
|
|
bad[blen] = '\0';
|
|
}
|
|
strlcat(bad, *ep, bsize);
|
|
strlcat(bad, ", ", bsize);
|
|
blen += len;
|
|
if (eq != NULL)
|
|
*eq = '=';
|
|
}
|
|
}
|
|
if (bad != NULL) {
|
|
bad[blen - 2] = '\0'; /* remove trailing ", " */
|
|
log_error(NO_MAIL,
|
|
"sorry, you are not allowed to set the following environment variables: %s", bad);
|
|
/* NOTREACHED */
|
|
efree(bad);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Read in /etc/environment ala AIX and Linux.
|
|
* Lines may be in either of three formats:
|
|
* NAME=VALUE
|
|
* NAME="VALUE"
|
|
* NAME='VALUE'
|
|
* with an optional "export" prefix so the shell can source the file.
|
|
* Invalid lines, blank lines, or lines consisting solely of a comment
|
|
* character are skipped.
|
|
*/
|
|
void
|
|
read_env_file(const char *path, int overwrite)
|
|
{
|
|
FILE *fp;
|
|
char *cp, *var, *val;
|
|
size_t var_len, val_len;
|
|
|
|
if ((fp = fopen(path, "r")) == NULL)
|
|
return;
|
|
|
|
while ((var = sudo_parseln(fp)) != NULL) {
|
|
/* Skip blank or comment lines */
|
|
if (*var == '\0')
|
|
continue;
|
|
|
|
/* Skip optional "export " */
|
|
if (strncmp(var, "export", 6) == 0 && isspace((unsigned char) var[6])) {
|
|
var += 7;
|
|
while (isspace((unsigned char) *var)) {
|
|
var++;
|
|
}
|
|
}
|
|
|
|
/* Must be of the form name=["']value['"] */
|
|
for (val = var; *val != '\0' && *val != '='; val++)
|
|
;
|
|
if (var == val || *val != '=')
|
|
continue;
|
|
var_len = (size_t)(val - var);
|
|
val_len = strlen(++val);
|
|
|
|
/* Strip leading and trailing single/double quotes */
|
|
if ((val[0] == '\'' || val[0] == '\"') && val[0] == val[val_len - 1]) {
|
|
val[val_len - 1] = '\0';
|
|
val++;
|
|
val_len -= 2;
|
|
}
|
|
|
|
cp = emalloc(var_len + 1 + val_len + 1);
|
|
memcpy(cp, var, var_len + 1); /* includes '=' */
|
|
memcpy(cp + var_len + 1, val, val_len + 1); /* includes NUL */
|
|
|
|
sudo_putenv(cp, TRUE, overwrite);
|
|
}
|
|
fclose(fp);
|
|
}
|
|
|
|
void
|
|
init_envtables(void)
|
|
{
|
|
struct list_member *cur;
|
|
const char **p;
|
|
|
|
/* Fill in the "env_delete" list. */
|
|
for (p = initial_badenv_table; *p; p++) {
|
|
cur = emalloc(sizeof(struct list_member));
|
|
cur->value = estrdup(*p);
|
|
cur->next = def_env_delete;
|
|
def_env_delete = cur;
|
|
}
|
|
|
|
/* Fill in the "env_check" list. */
|
|
for (p = initial_checkenv_table; *p; p++) {
|
|
cur = emalloc(sizeof(struct list_member));
|
|
cur->value = estrdup(*p);
|
|
cur->next = def_env_check;
|
|
def_env_check = cur;
|
|
}
|
|
|
|
/* Fill in the "env_keep" list. */
|
|
for (p = initial_keepenv_table; *p; p++) {
|
|
cur = emalloc(sizeof(struct list_member));
|
|
cur->value = estrdup(*p);
|
|
cur->next = def_env_keep;
|
|
def_env_keep = cur;
|
|
}
|
|
}
|