[1770] | 1 | /* vi: set sw=4 ts=4: */
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[821] | 2 | /* Copyright (C) 2003 Manuel Novoa III
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| 3 | *
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| 4 | * Licensed under GPL v2, or later. See file LICENSE in this tarball.
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| 5 | */
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| 6 |
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| 7 | /* Nov 6, 2003 Initial version.
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| 8 | *
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| 9 | * NOTE: This implementation is quite strict about requiring all
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| 10 | * field seperators. It also does not allow leading whitespace
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| 11 | * except when processing the numeric fields. glibc is more
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| 12 | * lenient. See the various glibc difference comments below.
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| 13 | *
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| 14 | * TODO:
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| 15 | * Move to dynamic allocation of (currently statically allocated)
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| 16 | * buffers; especially for the group-related functions since
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| 17 | * large group member lists will cause error returns.
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| 18 | *
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| 19 | */
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| 20 |
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| 21 | #include "libbb.h"
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| 22 | #include <features.h>
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| 23 | #include <assert.h>
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| 24 |
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| 25 | #ifndef _PATH_SHADOW
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| 26 | #define _PATH_SHADOW "/etc/shadow"
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| 27 | #endif
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| 28 | #ifndef _PATH_PASSWD
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| 29 | #define _PATH_PASSWD "/etc/passwd"
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| 30 | #endif
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| 31 | #ifndef _PATH_GROUP
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| 32 | #define _PATH_GROUP "/etc/group"
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| 33 | #endif
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| 34 |
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| 35 | /**********************************************************************/
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| 36 | /* Sizes for statically allocated buffers. */
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| 37 |
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| 38 | /* If you change these values, also change _SC_GETPW_R_SIZE_MAX and
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| 39 | * _SC_GETGR_R_SIZE_MAX in libc/unistd/sysconf.c to match */
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| 40 | #define PWD_BUFFER_SIZE 256
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| 41 | #define GRP_BUFFER_SIZE 256
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| 42 |
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| 43 | /**********************************************************************/
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| 44 | /* Prototypes for internal functions. */
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| 45 |
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[1770] | 46 | static int bb__pgsreader(int (*parserfunc)(void *d, char *line), void *data,
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| 47 | char *__restrict line_buff, size_t buflen, FILE *f);
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[821] | 48 |
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[1770] | 49 | static int bb__parsepwent(void *pw, char *line);
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| 50 | static int bb__parsegrent(void *gr, char *line);
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| 51 | #if ENABLE_USE_BB_SHADOW
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| 52 | static int bb__parsespent(void *sp, char *line);
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| 53 | #endif
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[821] | 54 |
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| 55 | /**********************************************************************/
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[1770] | 56 | /* We avoid having big global data. */
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| 57 |
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| 58 | struct statics {
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| 59 | /* Smaller things first */
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| 60 | struct passwd getpwuid_resultbuf;
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| 61 | struct group getgrgid_resultbuf;
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| 62 | struct passwd getpwnam_resultbuf;
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| 63 | struct group getgrnam_resultbuf;
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| 64 |
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| 65 | char getpwuid_buffer[PWD_BUFFER_SIZE];
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| 66 | char getgrgid_buffer[GRP_BUFFER_SIZE];
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| 67 | char getpwnam_buffer[PWD_BUFFER_SIZE];
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| 68 | char getgrnam_buffer[GRP_BUFFER_SIZE];
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| 69 | #if 0
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| 70 | struct passwd fgetpwent_resultbuf;
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| 71 | struct group fgetgrent_resultbuf;
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| 72 | struct spwd fgetspent_resultbuf;
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| 73 | char fgetpwent_buffer[PWD_BUFFER_SIZE];
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| 74 | char fgetgrent_buffer[GRP_BUFFER_SIZE];
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| 75 | char fgetspent_buffer[PWD_BUFFER_SIZE];
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| 76 | #endif
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| 77 | #if 0 //ENABLE_USE_BB_SHADOW
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| 78 | struct spwd getspuid_resultbuf;
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| 79 | struct spwd getspnam_resultbuf;
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| 80 | char getspuid_buffer[PWD_BUFFER_SIZE];
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| 81 | char getspnam_buffer[PWD_BUFFER_SIZE];
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| 82 | #endif
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| 83 | // Not converted - too small to bother
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| 84 | //pthread_mutex_t mylock = PTHREAD_MUTEX_INITIALIZER;
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| 85 | //FILE *pwf /*= NULL*/;
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| 86 | //FILE *grf /*= NULL*/;
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| 87 | //FILE *spf /*= NULL*/;
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| 88 | #if 0
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| 89 | struct passwd getpwent_pwd;
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| 90 | struct group getgrent_gr;
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| 91 | char getpwent_line_buff[PWD_BUFFER_SIZE];
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| 92 | char getgrent_line_buff[GRP_BUFFER_SIZE];
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| 93 | #endif
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| 94 | #if 0 //ENABLE_USE_BB_SHADOW
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| 95 | struct spwd getspent_spwd;
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| 96 | struct spwd sgetspent_spwd;
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| 97 | char getspent_line_buff[PWD_BUFFER_SIZE];
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| 98 | char sgetspent_line_buff[PWD_BUFFER_SIZE];
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| 99 | #endif
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| 100 | };
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| 101 |
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| 102 | static struct statics *ptr_to_statics;
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| 103 |
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| 104 | static struct statics *get_S(void)
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| 105 | {
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| 106 | if (!ptr_to_statics)
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| 107 | ptr_to_statics = xzalloc(sizeof(*ptr_to_statics));
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| 108 | return ptr_to_statics;
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| 109 | }
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| 110 |
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| 111 | /* Always use in this order, get_S() must be called first */
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| 112 | #define RESULTBUF(name) &((S = get_S())->name##_resultbuf)
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| 113 | #define BUFFER(name) (S->name##_buffer)
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| 114 |
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| 115 | /**********************************************************************/
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[821] | 116 | /* For the various fget??ent_r funcs, return
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| 117 | *
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| 118 | * 0: success
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| 119 | * ENOENT: end-of-file encountered
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| 120 | * ERANGE: buflen too small
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[1770] | 121 | * other error values possible. See bb__pgsreader.
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[821] | 122 | *
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| 123 | * Also, *result == resultbuf on success and NULL on failure.
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| 124 | *
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| 125 | * NOTE: glibc difference - For the ENOENT case, glibc also sets errno.
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| 126 | * We do not, as it really isn't an error if we reach the end-of-file.
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| 127 | * Doing so is analogous to having fgetc() set errno on EOF.
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| 128 | */
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| 129 | /**********************************************************************/
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| 130 |
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| 131 | int fgetpwent_r(FILE *__restrict stream, struct passwd *__restrict resultbuf,
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| 132 | char *__restrict buffer, size_t buflen,
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| 133 | struct passwd **__restrict result)
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| 134 | {
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| 135 | int rv;
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| 136 |
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| 137 | *result = NULL;
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| 138 |
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[1770] | 139 | rv = bb__pgsreader(bb__parsepwent, resultbuf, buffer, buflen, stream);
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| 140 | if (!rv) {
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[821] | 141 | *result = resultbuf;
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| 142 | }
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| 143 |
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| 144 | return rv;
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| 145 | }
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| 146 |
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| 147 | int fgetgrent_r(FILE *__restrict stream, struct group *__restrict resultbuf,
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| 148 | char *__restrict buffer, size_t buflen,
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| 149 | struct group **__restrict result)
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| 150 | {
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| 151 | int rv;
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| 152 |
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| 153 | *result = NULL;
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| 154 |
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[1770] | 155 | rv = bb__pgsreader(bb__parsegrent, resultbuf, buffer, buflen, stream);
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| 156 | if (!rv) {
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[821] | 157 | *result = resultbuf;
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| 158 | }
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| 159 |
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| 160 | return rv;
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| 161 | }
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| 162 |
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[1770] | 163 | #if ENABLE_USE_BB_SHADOW
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[821] | 164 | int fgetspent_r(FILE *__restrict stream, struct spwd *__restrict resultbuf,
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| 165 | char *__restrict buffer, size_t buflen,
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| 166 | struct spwd **__restrict result)
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| 167 | {
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| 168 | int rv;
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| 169 |
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| 170 | *result = NULL;
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| 171 |
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[1770] | 172 | rv = bb__pgsreader(bb__parsespent, resultbuf, buffer, buflen, stream);
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| 173 | if (!rv) {
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[821] | 174 | *result = resultbuf;
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| 175 | }
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| 176 |
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| 177 | return rv;
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| 178 | }
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[1770] | 179 | #endif
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[821] | 180 |
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| 181 | /**********************************************************************/
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| 182 | /* For the various fget??ent funcs, return NULL on failure and a
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| 183 | * pointer to the appropriate struct (statically allocated) on success.
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[1770] | 184 | * TODO: audit & stop using these in bbox, they pull in static buffers */
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[821] | 185 | /**********************************************************************/
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| 186 |
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[1770] | 187 | #if 0
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[821] | 188 | struct passwd *fgetpwent(FILE *stream)
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| 189 | {
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[1770] | 190 | struct statics *S;
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| 191 | struct passwd *resultbuf = RESULTBUF(fgetpwent);
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| 192 | char *buffer = BUFFER(fgetpwent);
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[821] | 193 | struct passwd *result;
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| 194 |
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[1770] | 195 | fgetpwent_r(stream, resultbuf, buffer, sizeof(BUFFER(fgetpwent)), &result);
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[821] | 196 | return result;
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| 197 | }
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| 198 |
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| 199 | struct group *fgetgrent(FILE *stream)
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| 200 | {
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[1770] | 201 | struct statics *S;
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| 202 | struct group *resultbuf = RESULTBUF(fgetgrent);
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| 203 | char *buffer = BUFFER(fgetgrent);
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[821] | 204 | struct group *result;
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| 205 |
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[1770] | 206 | fgetgrent_r(stream, resultbuf, buffer, sizeof(BUFFER(fgetgrent)), &result);
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[821] | 207 | return result;
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| 208 | }
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| 209 | #endif
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| 210 |
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[1770] | 211 | #if ENABLE_USE_BB_SHADOW
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| 212 | #if 0
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[821] | 213 | struct spwd *fgetspent(FILE *stream)
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| 214 | {
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[1770] | 215 | struct statics *S;
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| 216 | struct spwd *resultbuf = RESULTBUF(fgetspent);
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| 217 | char *buffer = BUFFER(fgetspent);
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[821] | 218 | struct spwd *result;
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| 219 |
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[1770] | 220 | fgetspent_r(stream, resultbuf, buffer, sizeof(BUFFER(fgetspent)), &result);
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[821] | 221 | return result;
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| 222 | }
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| 223 | #endif
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| 224 |
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| 225 | int sgetspent_r(const char *string, struct spwd *result_buf,
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| 226 | char *buffer, size_t buflen, struct spwd **result)
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| 227 | {
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| 228 | int rv = ERANGE;
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| 229 |
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| 230 | *result = NULL;
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| 231 |
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| 232 | if (buflen < PWD_BUFFER_SIZE) {
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| 233 | DO_ERANGE:
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| 234 | errno=rv;
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| 235 | goto DONE;
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| 236 | }
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| 237 |
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| 238 | if (string != buffer) {
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| 239 | if (strlen(string) >= buflen) {
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| 240 | goto DO_ERANGE;
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| 241 | }
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| 242 | strcpy(buffer, string);
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| 243 | }
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| 244 |
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[1770] | 245 | rv = bb__parsespent(result_buf, buffer);
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| 246 | if (!rv) {
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[821] | 247 | *result = result_buf;
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| 248 | }
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| 249 |
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| 250 | DONE:
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| 251 | return rv;
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| 252 | }
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[1770] | 253 | #endif
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[821] | 254 |
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| 255 | /**********************************************************************/
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| 256 |
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[1770] | 257 | #define GETXXKEY_R_FUNC getpwnam_r
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| 258 | #define GETXXKEY_R_PARSER bb__parsepwent
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| 259 | #define GETXXKEY_R_ENTTYPE struct passwd
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| 260 | #define GETXXKEY_R_TEST(ENT) (!strcmp((ENT)->pw_name, key))
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| 261 | #define GETXXKEY_R_KEYTYPE const char *__restrict
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| 262 | #define GETXXKEY_R_PATHNAME _PATH_PASSWD
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[821] | 263 | #include "pwd_grp_internal.c"
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| 264 |
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[1770] | 265 | #define GETXXKEY_R_FUNC getgrnam_r
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| 266 | #define GETXXKEY_R_PARSER bb__parsegrent
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| 267 | #define GETXXKEY_R_ENTTYPE struct group
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| 268 | #define GETXXKEY_R_TEST(ENT) (!strcmp((ENT)->gr_name, key))
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| 269 | #define GETXXKEY_R_KEYTYPE const char *__restrict
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| 270 | #define GETXXKEY_R_PATHNAME _PATH_GROUP
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[821] | 271 | #include "pwd_grp_internal.c"
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| 272 |
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[1770] | 273 | #if ENABLE_USE_BB_SHADOW
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| 274 | #define GETXXKEY_R_FUNC getspnam_r
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| 275 | #define GETXXKEY_R_PARSER bb__parsespent
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| 276 | #define GETXXKEY_R_ENTTYPE struct spwd
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| 277 | #define GETXXKEY_R_TEST(ENT) (!strcmp((ENT)->sp_namp, key))
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| 278 | #define GETXXKEY_R_KEYTYPE const char *__restrict
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| 279 | #define GETXXKEY_R_PATHNAME _PATH_SHADOW
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[821] | 280 | #include "pwd_grp_internal.c"
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| 281 | #endif
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| 282 |
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[1770] | 283 | #define GETXXKEY_R_FUNC getpwuid_r
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| 284 | #define GETXXKEY_R_PARSER bb__parsepwent
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| 285 | #define GETXXKEY_R_ENTTYPE struct passwd
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| 286 | #define GETXXKEY_R_TEST(ENT) ((ENT)->pw_uid == key)
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| 287 | #define GETXXKEY_R_KEYTYPE uid_t
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| 288 | #define GETXXKEY_R_PATHNAME _PATH_PASSWD
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[821] | 289 | #include "pwd_grp_internal.c"
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| 290 |
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[1770] | 291 | #define GETXXKEY_R_FUNC getgrgid_r
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| 292 | #define GETXXKEY_R_PARSER bb__parsegrent
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| 293 | #define GETXXKEY_R_ENTTYPE struct group
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| 294 | #define GETXXKEY_R_TEST(ENT) ((ENT)->gr_gid == key)
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| 295 | #define GETXXKEY_R_KEYTYPE gid_t
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| 296 | #define GETXXKEY_R_PATHNAME _PATH_GROUP
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[821] | 297 | #include "pwd_grp_internal.c"
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| 298 |
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| 299 | /**********************************************************************/
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[1770] | 300 | /* TODO: audit & stop using these in bbox, they pull in static buffers */
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[821] | 301 |
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[1770] | 302 | /* This one has many users */
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[821] | 303 | struct passwd *getpwuid(uid_t uid)
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| 304 | {
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[1770] | 305 | struct statics *S;
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| 306 | struct passwd *resultbuf = RESULTBUF(getpwuid);
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| 307 | char *buffer = BUFFER(getpwuid);
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[821] | 308 | struct passwd *result;
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| 309 |
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[1770] | 310 | getpwuid_r(uid, resultbuf, buffer, sizeof(BUFFER(getpwuid)), &result);
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[821] | 311 | return result;
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| 312 | }
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| 313 |
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[1770] | 314 | /* This one has many users */
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[821] | 315 | struct group *getgrgid(gid_t gid)
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| 316 | {
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[1770] | 317 | struct statics *S;
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| 318 | struct group *resultbuf = RESULTBUF(getgrgid);
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| 319 | char *buffer = BUFFER(getgrgid);
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[821] | 320 | struct group *result;
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| 321 |
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[1770] | 322 | getgrgid_r(gid, resultbuf, buffer, sizeof(BUFFER(getgrgid)), &result);
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[821] | 323 | return result;
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| 324 | }
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| 325 |
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[1770] | 326 | #if 0 //ENABLE_USE_BB_SHADOW
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[821] | 327 | /* This function is non-standard and is currently not built. It seems
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| 328 | * to have been created as a reentrant version of the non-standard
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| 329 | * functions getspuid. Why getspuid was added, I do not know. */
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| 330 | int getspuid_r(uid_t uid, struct spwd *__restrict resultbuf,
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| 331 | char *__restrict buffer, size_t buflen,
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| 332 | struct spwd **__restrict result)
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| 333 | {
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| 334 | int rv;
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| 335 | struct passwd *pp;
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| 336 | struct passwd password;
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| 337 | char pwd_buff[PWD_BUFFER_SIZE];
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| 338 |
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| 339 | *result = NULL;
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[1770] | 340 | rv = getpwuid_r(uid, &password, pwd_buff, sizeof(pwd_buff), &pp);
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| 341 | if (!rv) {
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[821] | 342 | rv = getspnam_r(password.pw_name, resultbuf, buffer, buflen, result);
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| 343 | }
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| 344 |
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| 345 | return rv;
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| 346 | }
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| 347 |
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| 348 | /* This function is non-standard and is currently not built.
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| 349 | * Why it was added, I do not know. */
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| 350 | struct spwd *getspuid(uid_t uid)
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| 351 | {
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[1770] | 352 | struct statics *S;
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| 353 | struct spwd *resultbuf = RESULTBUF(getspuid);
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| 354 | char *buffer = BUFFER(getspuid);
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[821] | 355 | struct spwd *result;
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| 356 |
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[1770] | 357 | getspuid_r(uid, resultbuf, buffer, sizeof(BUFFER(getspuid)), &result);
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[821] | 358 | return result;
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| 359 | }
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| 360 | #endif
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| 361 |
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[1770] | 362 | /* This one has many users */
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[821] | 363 | struct passwd *getpwnam(const char *name)
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| 364 | {
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[1770] | 365 | struct statics *S;
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| 366 | struct passwd *resultbuf = RESULTBUF(getpwnam);
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| 367 | char *buffer = BUFFER(getpwnam);
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[821] | 368 | struct passwd *result;
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| 369 |
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[1770] | 370 | getpwnam_r(name, resultbuf, buffer, sizeof(BUFFER(getpwnam)), &result);
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[821] | 371 | return result;
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| 372 | }
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| 373 |
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[1770] | 374 | /* This one has many users */
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[821] | 375 | struct group *getgrnam(const char *name)
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| 376 | {
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[1770] | 377 | struct statics *S;
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| 378 | struct group *resultbuf = RESULTBUF(getgrnam);
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| 379 | char *buffer = BUFFER(getgrnam);
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[821] | 380 | struct group *result;
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| 381 |
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[1770] | 382 | getgrnam_r(name, resultbuf, buffer, sizeof(BUFFER(getgrnam)), &result);
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[821] | 383 | return result;
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| 384 | }
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| 385 |
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[1770] | 386 | #if 0 //ENABLE_USE_BB_SHADOW
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[821] | 387 | struct spwd *getspnam(const char *name)
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| 388 | {
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[1770] | 389 | struct statics *S;
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| 390 | struct spwd *resultbuf = RESULTBUF(getspnam);
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| 391 | char *buffer = BUFFER(getspnam);
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[821] | 392 | struct spwd *result;
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| 393 |
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[1770] | 394 | getspnam_r(name, resultbuf, buffer, sizeof(BUFFER(getspnam)), &result);
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[821] | 395 | return result;
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| 396 | }
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| 397 | #endif
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| 398 |
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[1770] | 399 | /* This one doesn't use static buffers */
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[821] | 400 | int getpw(uid_t uid, char *buf)
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| 401 | {
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| 402 | struct passwd resultbuf;
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| 403 | struct passwd *result;
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| 404 | char buffer[PWD_BUFFER_SIZE];
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| 405 |
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| 406 | if (!buf) {
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[1770] | 407 | errno = EINVAL;
|
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[821] | 408 | } else if (!getpwuid_r(uid, &resultbuf, buffer, sizeof(buffer), &result)) {
|
---|
| 409 | if (sprintf(buf, "%s:%s:%lu:%lu:%s:%s:%s\n",
|
---|
| 410 | resultbuf.pw_name, resultbuf.pw_passwd,
|
---|
| 411 | (unsigned long)(resultbuf.pw_uid),
|
---|
| 412 | (unsigned long)(resultbuf.pw_gid),
|
---|
| 413 | resultbuf.pw_gecos, resultbuf.pw_dir,
|
---|
| 414 | resultbuf.pw_shell) >= 0
|
---|
| 415 | ) {
|
---|
| 416 | return 0;
|
---|
| 417 | }
|
---|
| 418 | }
|
---|
| 419 |
|
---|
| 420 | return -1;
|
---|
| 421 | }
|
---|
| 422 |
|
---|
| 423 | /**********************************************************************/
|
---|
| 424 |
|
---|
[1770] | 425 | /* FIXME: we don't have such CONFIG_xx - ?! */
|
---|
| 426 |
|
---|
[821] | 427 | #if defined CONFIG_USE_BB_THREADSAFE_SHADOW && defined PTHREAD_MUTEX_INITIALIZER
|
---|
| 428 | static pthread_mutex_t mylock = PTHREAD_MUTEX_INITIALIZER;
|
---|
| 429 | # define LOCK pthread_mutex_lock(&mylock)
|
---|
| 430 | # define UNLOCK pthread_mutex_unlock(&mylock);
|
---|
| 431 | #else
|
---|
| 432 | # define LOCK ((void) 0)
|
---|
| 433 | # define UNLOCK ((void) 0)
|
---|
| 434 | #endif
|
---|
| 435 |
|
---|
| 436 | static FILE *pwf /*= NULL*/;
|
---|
| 437 | void setpwent(void)
|
---|
| 438 | {
|
---|
| 439 | LOCK;
|
---|
| 440 | if (pwf) {
|
---|
| 441 | rewind(pwf);
|
---|
| 442 | }
|
---|
| 443 | UNLOCK;
|
---|
| 444 | }
|
---|
| 445 |
|
---|
| 446 | void endpwent(void)
|
---|
| 447 | {
|
---|
| 448 | LOCK;
|
---|
| 449 | if (pwf) {
|
---|
| 450 | fclose(pwf);
|
---|
| 451 | pwf = NULL;
|
---|
| 452 | }
|
---|
| 453 | UNLOCK;
|
---|
| 454 | }
|
---|
| 455 |
|
---|
| 456 |
|
---|
| 457 | int getpwent_r(struct passwd *__restrict resultbuf,
|
---|
| 458 | char *__restrict buffer, size_t buflen,
|
---|
| 459 | struct passwd **__restrict result)
|
---|
| 460 | {
|
---|
| 461 | int rv;
|
---|
| 462 |
|
---|
| 463 | LOCK;
|
---|
| 464 | *result = NULL; /* In case of error... */
|
---|
| 465 |
|
---|
| 466 | if (!pwf) {
|
---|
[1770] | 467 | pwf = fopen(_PATH_PASSWD, "r");
|
---|
| 468 | if (!pwf) {
|
---|
[821] | 469 | rv = errno;
|
---|
| 470 | goto ERR;
|
---|
| 471 | }
|
---|
| 472 | }
|
---|
| 473 |
|
---|
[1770] | 474 | rv = bb__pgsreader(bb__parsepwent, resultbuf, buffer, buflen, pwf);
|
---|
| 475 | if (!rv) {
|
---|
[821] | 476 | *result = resultbuf;
|
---|
| 477 | }
|
---|
| 478 |
|
---|
| 479 | ERR:
|
---|
| 480 | UNLOCK;
|
---|
| 481 | return rv;
|
---|
| 482 | }
|
---|
| 483 |
|
---|
| 484 | static FILE *grf /*= NULL*/;
|
---|
| 485 | void setgrent(void)
|
---|
| 486 | {
|
---|
| 487 | LOCK;
|
---|
| 488 | if (grf) {
|
---|
| 489 | rewind(grf);
|
---|
| 490 | }
|
---|
| 491 | UNLOCK;
|
---|
| 492 | }
|
---|
| 493 |
|
---|
| 494 | void endgrent(void)
|
---|
| 495 | {
|
---|
| 496 | LOCK;
|
---|
| 497 | if (grf) {
|
---|
| 498 | fclose(grf);
|
---|
| 499 | grf = NULL;
|
---|
| 500 | }
|
---|
| 501 | UNLOCK;
|
---|
| 502 | }
|
---|
| 503 |
|
---|
| 504 | int getgrent_r(struct group *__restrict resultbuf,
|
---|
| 505 | char *__restrict buffer, size_t buflen,
|
---|
| 506 | struct group **__restrict result)
|
---|
| 507 | {
|
---|
| 508 | int rv;
|
---|
| 509 |
|
---|
| 510 | LOCK;
|
---|
| 511 | *result = NULL; /* In case of error... */
|
---|
| 512 |
|
---|
| 513 | if (!grf) {
|
---|
[1770] | 514 | grf = fopen(_PATH_GROUP, "r");
|
---|
| 515 | if (!grf) {
|
---|
[821] | 516 | rv = errno;
|
---|
| 517 | goto ERR;
|
---|
| 518 | }
|
---|
| 519 | }
|
---|
| 520 |
|
---|
[1770] | 521 | rv = bb__pgsreader(bb__parsegrent, resultbuf, buffer, buflen, grf);
|
---|
| 522 | if (!rv) {
|
---|
[821] | 523 | *result = resultbuf;
|
---|
| 524 | }
|
---|
| 525 |
|
---|
| 526 | ERR:
|
---|
| 527 | UNLOCK;
|
---|
| 528 | return rv;
|
---|
| 529 | }
|
---|
| 530 |
|
---|
[1770] | 531 | #if ENABLE_USE_BB_SHADOW
|
---|
[821] | 532 | static FILE *spf /*= NULL*/;
|
---|
| 533 | void setspent(void)
|
---|
| 534 | {
|
---|
| 535 | LOCK;
|
---|
| 536 | if (spf) {
|
---|
| 537 | rewind(spf);
|
---|
| 538 | }
|
---|
| 539 | UNLOCK;
|
---|
| 540 | }
|
---|
| 541 |
|
---|
| 542 | void endspent(void)
|
---|
| 543 | {
|
---|
| 544 | LOCK;
|
---|
| 545 | if (spf) {
|
---|
| 546 | fclose(spf);
|
---|
| 547 | spf = NULL;
|
---|
| 548 | }
|
---|
| 549 | UNLOCK;
|
---|
| 550 | }
|
---|
| 551 |
|
---|
| 552 | int getspent_r(struct spwd *resultbuf, char *buffer,
|
---|
| 553 | size_t buflen, struct spwd **result)
|
---|
| 554 | {
|
---|
| 555 | int rv;
|
---|
| 556 |
|
---|
| 557 | LOCK;
|
---|
| 558 | *result = NULL; /* In case of error... */
|
---|
| 559 |
|
---|
| 560 | if (!spf) {
|
---|
[1770] | 561 | spf = fopen(_PATH_SHADOW, "r");
|
---|
| 562 | if (!spf) {
|
---|
[821] | 563 | rv = errno;
|
---|
| 564 | goto ERR;
|
---|
| 565 | }
|
---|
| 566 | }
|
---|
| 567 |
|
---|
[1770] | 568 | rv = bb__pgsreader(bb__parsespent, resultbuf, buffer, buflen, spf);
|
---|
| 569 | if (!rv) {
|
---|
[821] | 570 | *result = resultbuf;
|
---|
| 571 | }
|
---|
| 572 |
|
---|
| 573 | ERR:
|
---|
| 574 | UNLOCK;
|
---|
| 575 | return rv;
|
---|
| 576 | }
|
---|
| 577 | #endif
|
---|
| 578 |
|
---|
[1770] | 579 | #if 0
|
---|
[821] | 580 | struct passwd *getpwent(void)
|
---|
| 581 | {
|
---|
| 582 | static char line_buff[PWD_BUFFER_SIZE];
|
---|
| 583 | static struct passwd pwd;
|
---|
| 584 | struct passwd *result;
|
---|
| 585 |
|
---|
| 586 | getpwent_r(&pwd, line_buff, sizeof(line_buff), &result);
|
---|
| 587 | return result;
|
---|
| 588 | }
|
---|
| 589 |
|
---|
| 590 | struct group *getgrent(void)
|
---|
| 591 | {
|
---|
| 592 | static char line_buff[GRP_BUFFER_SIZE];
|
---|
| 593 | static struct group gr;
|
---|
| 594 | struct group *result;
|
---|
| 595 |
|
---|
| 596 | getgrent_r(&gr, line_buff, sizeof(line_buff), &result);
|
---|
| 597 | return result;
|
---|
| 598 | }
|
---|
| 599 | #endif
|
---|
| 600 |
|
---|
[1770] | 601 | #if 0 //ENABLE_USE_BB_SHADOW
|
---|
[821] | 602 | struct spwd *getspent(void)
|
---|
| 603 | {
|
---|
| 604 | static char line_buff[PWD_BUFFER_SIZE];
|
---|
| 605 | static struct spwd spwd;
|
---|
| 606 | struct spwd *result;
|
---|
| 607 |
|
---|
| 608 | getspent_r(&spwd, line_buff, sizeof(line_buff), &result);
|
---|
| 609 | return result;
|
---|
| 610 | }
|
---|
| 611 |
|
---|
| 612 | struct spwd *sgetspent(const char *string)
|
---|
| 613 | {
|
---|
| 614 | static char line_buff[PWD_BUFFER_SIZE];
|
---|
| 615 | static struct spwd spwd;
|
---|
| 616 | struct spwd *result;
|
---|
| 617 |
|
---|
| 618 | sgetspent_r(string, &spwd, line_buff, sizeof(line_buff), &result);
|
---|
| 619 | return result;
|
---|
| 620 | }
|
---|
| 621 | #endif
|
---|
| 622 |
|
---|
| 623 | int initgroups(const char *user, gid_t gid)
|
---|
| 624 | {
|
---|
| 625 | FILE *grfile;
|
---|
| 626 | gid_t *group_list;
|
---|
| 627 | int num_groups, rv;
|
---|
| 628 | char **m;
|
---|
| 629 | struct group group;
|
---|
| 630 | char buff[PWD_BUFFER_SIZE];
|
---|
| 631 |
|
---|
| 632 | rv = -1;
|
---|
| 633 |
|
---|
| 634 | /* We alloc space for 8 gids at a time. */
|
---|
[1770] | 635 | group_list = (gid_t *) malloc(8*sizeof(gid_t *));
|
---|
| 636 | if (group_list
|
---|
| 637 | && ((grfile = fopen(_PATH_GROUP, "r")) != NULL)
|
---|
| 638 | ) {
|
---|
[821] | 639 | *group_list = gid;
|
---|
| 640 | num_groups = 1;
|
---|
| 641 |
|
---|
[1770] | 642 | while (!bb__pgsreader(bb__parsegrent, &group, buff, sizeof(buff), grfile)) {
|
---|
[821] | 643 | assert(group.gr_mem); /* Must have at least a NULL terminator. */
|
---|
| 644 | if (group.gr_gid != gid) {
|
---|
[1770] | 645 | for (m = group.gr_mem; *m; m++) {
|
---|
[821] | 646 | if (!strcmp(*m, user)) {
|
---|
| 647 | if (!(num_groups & 7)) {
|
---|
| 648 | gid_t *tmp = (gid_t *)
|
---|
| 649 | realloc(group_list,
|
---|
| 650 | (num_groups+8) * sizeof(gid_t *));
|
---|
| 651 | if (!tmp) {
|
---|
| 652 | rv = -1;
|
---|
| 653 | goto DO_CLOSE;
|
---|
| 654 | }
|
---|
| 655 | group_list = tmp;
|
---|
| 656 | }
|
---|
| 657 | group_list[num_groups++] = group.gr_gid;
|
---|
| 658 | break;
|
---|
| 659 | }
|
---|
| 660 | }
|
---|
| 661 | }
|
---|
| 662 | }
|
---|
| 663 |
|
---|
| 664 | rv = setgroups(num_groups, group_list);
|
---|
| 665 | DO_CLOSE:
|
---|
| 666 | fclose(grfile);
|
---|
| 667 | }
|
---|
| 668 |
|
---|
| 669 | /* group_list will be NULL if initial malloc failed, which may trigger
|
---|
| 670 | * warnings from various malloc debuggers. */
|
---|
| 671 | free(group_list);
|
---|
| 672 | return rv;
|
---|
| 673 | }
|
---|
| 674 |
|
---|
| 675 | int putpwent(const struct passwd *__restrict p, FILE *__restrict f)
|
---|
| 676 | {
|
---|
| 677 | int rv = -1;
|
---|
| 678 |
|
---|
| 679 | if (!p || !f) {
|
---|
| 680 | errno=EINVAL;
|
---|
| 681 | } else {
|
---|
| 682 | /* No extra thread locking is needed above what fprintf does. */
|
---|
| 683 | if (fprintf(f, "%s:%s:%lu:%lu:%s:%s:%s\n",
|
---|
| 684 | p->pw_name, p->pw_passwd,
|
---|
| 685 | (unsigned long)(p->pw_uid),
|
---|
| 686 | (unsigned long)(p->pw_gid),
|
---|
| 687 | p->pw_gecos, p->pw_dir, p->pw_shell) >= 0
|
---|
| 688 | ) {
|
---|
| 689 | rv = 0;
|
---|
| 690 | }
|
---|
| 691 | }
|
---|
| 692 |
|
---|
| 693 | return rv;
|
---|
| 694 | }
|
---|
| 695 |
|
---|
| 696 | int putgrent(const struct group *__restrict p, FILE *__restrict f)
|
---|
| 697 | {
|
---|
[1770] | 698 | static const char format[] ALIGN1 = ",%s";
|
---|
| 699 |
|
---|
[821] | 700 | char **m;
|
---|
| 701 | const char *fmt;
|
---|
| 702 | int rv = -1;
|
---|
| 703 |
|
---|
| 704 | if (!p || !f) { /* Sigh... glibc checks. */
|
---|
| 705 | errno=EINVAL;
|
---|
| 706 | } else {
|
---|
| 707 | if (fprintf(f, "%s:%s:%lu:",
|
---|
| 708 | p->gr_name, p->gr_passwd,
|
---|
| 709 | (unsigned long)(p->gr_gid)) >= 0
|
---|
| 710 | ) {
|
---|
| 711 |
|
---|
| 712 | fmt = format + 1;
|
---|
| 713 |
|
---|
| 714 | assert(p->gr_mem);
|
---|
| 715 | m = p->gr_mem;
|
---|
| 716 |
|
---|
| 717 | do {
|
---|
| 718 | if (!*m) {
|
---|
| 719 | if (fputc('\n', f) >= 0) {
|
---|
| 720 | rv = 0;
|
---|
| 721 | }
|
---|
| 722 | break;
|
---|
| 723 | }
|
---|
| 724 | if (fprintf(f, fmt, *m) < 0) {
|
---|
| 725 | break;
|
---|
| 726 | }
|
---|
| 727 | ++m;
|
---|
| 728 | fmt = format;
|
---|
| 729 | } while (1);
|
---|
| 730 |
|
---|
| 731 | }
|
---|
| 732 |
|
---|
| 733 | }
|
---|
| 734 |
|
---|
| 735 | return rv;
|
---|
| 736 | }
|
---|
| 737 |
|
---|
[1770] | 738 | #if ENABLE_USE_BB_SHADOW
|
---|
| 739 | static const unsigned char _sp_off[] ALIGN1 = {
|
---|
| 740 | offsetof(struct spwd, sp_lstchg), /* 2 - not a char ptr */
|
---|
| 741 | offsetof(struct spwd, sp_min), /* 3 - not a char ptr */
|
---|
| 742 | offsetof(struct spwd, sp_max), /* 4 - not a char ptr */
|
---|
| 743 | offsetof(struct spwd, sp_warn), /* 5 - not a char ptr */
|
---|
| 744 | offsetof(struct spwd, sp_inact), /* 6 - not a char ptr */
|
---|
| 745 | offsetof(struct spwd, sp_expire) /* 7 - not a char ptr */
|
---|
[821] | 746 | };
|
---|
| 747 |
|
---|
| 748 | int putspent(const struct spwd *p, FILE *stream)
|
---|
| 749 | {
|
---|
[1770] | 750 | static const char ld_format[] ALIGN1 = "%ld:";
|
---|
| 751 |
|
---|
[821] | 752 | const char *f;
|
---|
[1770] | 753 | long x;
|
---|
[821] | 754 | int i;
|
---|
| 755 | int rv = -1;
|
---|
| 756 |
|
---|
| 757 | /* Unlike putpwent and putgrent, glibc does not check the args. */
|
---|
| 758 | if (fprintf(stream, "%s:%s:", p->sp_namp,
|
---|
| 759 | (p->sp_pwdp ? p->sp_pwdp : "")) < 0
|
---|
[1770] | 760 | ) {
|
---|
[821] | 761 | goto DO_UNLOCK;
|
---|
| 762 | }
|
---|
| 763 |
|
---|
[1770] | 764 | for (i = 0; i < sizeof(_sp_off); i++) {
|
---|
[821] | 765 | f = ld_format;
|
---|
[1770] | 766 | x = *(const long *)(((const char *) p) + _sp_off[i]);
|
---|
| 767 | if (x == -1) {
|
---|
[821] | 768 | f += 3;
|
---|
| 769 | }
|
---|
| 770 | if (fprintf(stream, f, x) < 0) {
|
---|
| 771 | goto DO_UNLOCK;
|
---|
| 772 | }
|
---|
| 773 | }
|
---|
| 774 |
|
---|
| 775 | if ((p->sp_flag != ~0UL) && (fprintf(stream, "%lu", p->sp_flag) < 0)) {
|
---|
| 776 | goto DO_UNLOCK;
|
---|
| 777 | }
|
---|
| 778 |
|
---|
| 779 | if (fputc('\n', stream) > 0) {
|
---|
| 780 | rv = 0;
|
---|
| 781 | }
|
---|
| 782 |
|
---|
| 783 | DO_UNLOCK:
|
---|
| 784 | return rv;
|
---|
| 785 | }
|
---|
[1770] | 786 | #endif
|
---|
[821] | 787 |
|
---|
| 788 | /**********************************************************************/
|
---|
[1770] | 789 | /* Internal uClibc functions. */
|
---|
[821] | 790 | /**********************************************************************/
|
---|
| 791 |
|
---|
[1770] | 792 | static const unsigned char pw_off[] ALIGN1 = {
|
---|
| 793 | offsetof(struct passwd, pw_name), /* 0 */
|
---|
| 794 | offsetof(struct passwd, pw_passwd), /* 1 */
|
---|
| 795 | offsetof(struct passwd, pw_uid), /* 2 - not a char ptr */
|
---|
| 796 | offsetof(struct passwd, pw_gid), /* 3 - not a char ptr */
|
---|
| 797 | offsetof(struct passwd, pw_gecos), /* 4 */
|
---|
| 798 | offsetof(struct passwd, pw_dir), /* 5 */
|
---|
| 799 | offsetof(struct passwd, pw_shell) /* 6 */
|
---|
[821] | 800 | };
|
---|
| 801 |
|
---|
[1770] | 802 | static int bb__parsepwent(void *data, char *line)
|
---|
[821] | 803 | {
|
---|
| 804 | char *endptr;
|
---|
| 805 | char *p;
|
---|
| 806 | int i;
|
---|
| 807 |
|
---|
| 808 | i = 0;
|
---|
| 809 | do {
|
---|
| 810 | p = ((char *) ((struct passwd *) data)) + pw_off[i];
|
---|
| 811 |
|
---|
| 812 | if ((i & 6) ^ 2) { /* i!=2 and i!=3 */
|
---|
| 813 | *((char **) p) = line;
|
---|
| 814 | if (i==6) {
|
---|
| 815 | return 0;
|
---|
| 816 | }
|
---|
| 817 | /* NOTE: glibc difference - glibc allows omission of
|
---|
| 818 | * ':' seperators after the gid field if all remaining
|
---|
| 819 | * entries are empty. We require all separators. */
|
---|
[1770] | 820 | line = strchr(line, ':');
|
---|
| 821 | if (!line) {
|
---|
[821] | 822 | break;
|
---|
| 823 | }
|
---|
| 824 | } else {
|
---|
| 825 | unsigned long t = strtoul(line, &endptr, 10);
|
---|
| 826 | /* Make sure we had at least one digit, and that the
|
---|
| 827 | * failing char is the next field seperator ':'. See
|
---|
| 828 | * glibc difference note above. */
|
---|
| 829 | /* TODO: Also check for leading whitespace? */
|
---|
| 830 | if ((endptr == line) || (*endptr != ':')) {
|
---|
| 831 | break;
|
---|
| 832 | }
|
---|
| 833 | line = endptr;
|
---|
| 834 | if (i & 1) { /* i == 3 -- gid */
|
---|
| 835 | *((gid_t *) p) = t;
|
---|
| 836 | } else { /* i == 2 -- uid */
|
---|
| 837 | *((uid_t *) p) = t;
|
---|
| 838 | }
|
---|
| 839 | }
|
---|
| 840 |
|
---|
| 841 | *line++ = 0;
|
---|
| 842 | ++i;
|
---|
| 843 | } while (1);
|
---|
| 844 |
|
---|
| 845 | return -1;
|
---|
| 846 | }
|
---|
| 847 |
|
---|
| 848 | /**********************************************************************/
|
---|
| 849 |
|
---|
[1770] | 850 | static const unsigned char gr_off[] ALIGN1 = {
|
---|
| 851 | offsetof(struct group, gr_name), /* 0 */
|
---|
| 852 | offsetof(struct group, gr_passwd), /* 1 */
|
---|
| 853 | offsetof(struct group, gr_gid) /* 2 - not a char ptr */
|
---|
[821] | 854 | };
|
---|
| 855 |
|
---|
[1770] | 856 | static int bb__parsegrent(void *data, char *line)
|
---|
[821] | 857 | {
|
---|
| 858 | char *endptr;
|
---|
| 859 | char *p;
|
---|
| 860 | int i;
|
---|
| 861 | char **members;
|
---|
| 862 | char *end_of_buf;
|
---|
| 863 |
|
---|
| 864 | end_of_buf = ((struct group *) data)->gr_name; /* Evil hack! */
|
---|
| 865 | i = 0;
|
---|
| 866 | do {
|
---|
| 867 | p = ((char *) ((struct group *) data)) + gr_off[i];
|
---|
| 868 |
|
---|
| 869 | if (i < 2) {
|
---|
| 870 | *((char **) p) = line;
|
---|
[1770] | 871 | line = strchr(line, ':');
|
---|
| 872 | if (!line) {
|
---|
[821] | 873 | break;
|
---|
| 874 | }
|
---|
| 875 | *line++ = 0;
|
---|
| 876 | ++i;
|
---|
| 877 | } else {
|
---|
| 878 | *((gid_t *) p) = strtoul(line, &endptr, 10);
|
---|
| 879 |
|
---|
| 880 | /* NOTE: glibc difference - glibc allows omission of the
|
---|
| 881 | * trailing colon when there is no member list. We treat
|
---|
| 882 | * this as an error. */
|
---|
| 883 |
|
---|
| 884 | /* Make sure we had at least one digit, and that the
|
---|
| 885 | * failing char is the next field seperator ':'. See
|
---|
| 886 | * glibc difference note above. */
|
---|
| 887 | if ((endptr == line) || (*endptr != ':')) {
|
---|
| 888 | break;
|
---|
| 889 | }
|
---|
| 890 |
|
---|
| 891 | i = 1; /* Count terminating NULL ptr. */
|
---|
| 892 | p = endptr;
|
---|
| 893 |
|
---|
| 894 | if (p[1]) { /* We have a member list to process. */
|
---|
| 895 | /* Overwrite the last ':' with a ',' before counting.
|
---|
| 896 | * This allows us to test for initial ',' and adds
|
---|
| 897 | * one ',' so that the ',' count equals the member
|
---|
| 898 | * count. */
|
---|
| 899 | *p = ',';
|
---|
| 900 | do {
|
---|
| 901 | /* NOTE: glibc difference - glibc allows and trims leading
|
---|
| 902 | * (but not trailing) space. We treat this as an error. */
|
---|
| 903 | /* NOTE: glibc difference - glibc allows consecutive and
|
---|
| 904 | * trailing commas, and ignores "empty string" users. We
|
---|
| 905 | * treat this as an error. */
|
---|
| 906 | if (*p == ',') {
|
---|
| 907 | ++i;
|
---|
| 908 | *p = 0; /* nul-terminate each member string. */
|
---|
| 909 | if (!*++p || (*p == ',') || isspace(*p)) {
|
---|
| 910 | goto ERR;
|
---|
| 911 | }
|
---|
| 912 | }
|
---|
| 913 | } while (*++p);
|
---|
| 914 | }
|
---|
| 915 |
|
---|
| 916 | /* Now align (p+1), rounding up. */
|
---|
| 917 | /* Assumes sizeof(char **) is a power of 2. */
|
---|
| 918 | members = (char **)( (((intptr_t) p) + sizeof(char **))
|
---|
| 919 | & ~((intptr_t)(sizeof(char **) - 1)) );
|
---|
| 920 |
|
---|
| 921 | if (((char *)(members + i)) > end_of_buf) { /* No space. */
|
---|
| 922 | break;
|
---|
| 923 | }
|
---|
| 924 |
|
---|
| 925 | ((struct group *) data)->gr_mem = members;
|
---|
| 926 |
|
---|
| 927 | if (--i) {
|
---|
| 928 | p = endptr; /* Pointing to char prior to first member. */
|
---|
| 929 | do {
|
---|
| 930 | *members++ = ++p;
|
---|
| 931 | if (!--i) break;
|
---|
| 932 | while (*++p) {}
|
---|
| 933 | } while (1);
|
---|
| 934 | }
|
---|
| 935 | *members = NULL;
|
---|
| 936 |
|
---|
| 937 | return 0;
|
---|
| 938 | }
|
---|
| 939 | } while (1);
|
---|
| 940 |
|
---|
| 941 | ERR:
|
---|
| 942 | return -1;
|
---|
| 943 | }
|
---|
| 944 |
|
---|
| 945 | /**********************************************************************/
|
---|
| 946 |
|
---|
[1770] | 947 | #if ENABLE_USE_BB_SHADOW
|
---|
| 948 | static const unsigned char sp_off[] ALIGN1 = {
|
---|
| 949 | offsetof(struct spwd, sp_namp), /* 0 */
|
---|
| 950 | offsetof(struct spwd, sp_pwdp), /* 1 */
|
---|
| 951 | offsetof(struct spwd, sp_lstchg), /* 2 - not a char ptr */
|
---|
| 952 | offsetof(struct spwd, sp_min), /* 3 - not a char ptr */
|
---|
| 953 | offsetof(struct spwd, sp_max), /* 4 - not a char ptr */
|
---|
| 954 | offsetof(struct spwd, sp_warn), /* 5 - not a char ptr */
|
---|
| 955 | offsetof(struct spwd, sp_inact), /* 6 - not a char ptr */
|
---|
| 956 | offsetof(struct spwd, sp_expire), /* 7 - not a char ptr */
|
---|
| 957 | offsetof(struct spwd, sp_flag) /* 8 - not a char ptr */
|
---|
[821] | 958 | };
|
---|
| 959 |
|
---|
[1770] | 960 | static int bb__parsespent(void *data, char * line)
|
---|
[821] | 961 | {
|
---|
| 962 | char *endptr;
|
---|
| 963 | char *p;
|
---|
| 964 | int i;
|
---|
| 965 |
|
---|
| 966 | i = 0;
|
---|
| 967 | do {
|
---|
| 968 | p = ((char *) ((struct spwd *) data)) + sp_off[i];
|
---|
| 969 | if (i < 2) {
|
---|
| 970 | *((char **) p) = line;
|
---|
[1770] | 971 | line = strchr(line, ':');
|
---|
| 972 | if (!line) {
|
---|
[821] | 973 | break;
|
---|
| 974 | }
|
---|
| 975 | } else {
|
---|
| 976 | *((long *) p) = (long) strtoul(line, &endptr, 10);
|
---|
| 977 |
|
---|
| 978 | if (endptr == line) {
|
---|
| 979 | *((long *) p) = ((i != 8) ? -1L : ((long)(~0UL)));
|
---|
| 980 | }
|
---|
| 981 |
|
---|
| 982 | line = endptr;
|
---|
| 983 |
|
---|
| 984 | if (i == 8) {
|
---|
| 985 | if (!*endptr) {
|
---|
| 986 | return 0;
|
---|
| 987 | }
|
---|
| 988 | break;
|
---|
| 989 | }
|
---|
| 990 |
|
---|
| 991 | if (*endptr != ':') {
|
---|
| 992 | break;
|
---|
| 993 | }
|
---|
| 994 |
|
---|
| 995 | }
|
---|
| 996 |
|
---|
| 997 | *line++ = 0;
|
---|
| 998 | ++i;
|
---|
| 999 | } while (1);
|
---|
| 1000 |
|
---|
| 1001 | return EINVAL;
|
---|
| 1002 | }
|
---|
[1770] | 1003 | #endif
|
---|
[821] | 1004 |
|
---|
| 1005 | /**********************************************************************/
|
---|
| 1006 |
|
---|
| 1007 | /* Reads until if EOF, or until if finds a line which fits in the buffer
|
---|
| 1008 | * and for which the parser function succeeds.
|
---|
| 1009 | *
|
---|
| 1010 | * Returns 0 on success and ENOENT for end-of-file (glibc concession).
|
---|
| 1011 | */
|
---|
| 1012 |
|
---|
[1770] | 1013 | static int bb__pgsreader(int (*parserfunc)(void *d, char *line), void *data,
|
---|
[821] | 1014 | char *__restrict line_buff, size_t buflen, FILE *f)
|
---|
| 1015 | {
|
---|
| 1016 | int line_len;
|
---|
| 1017 | int skip;
|
---|
| 1018 | int rv = ERANGE;
|
---|
| 1019 |
|
---|
| 1020 | if (buflen < PWD_BUFFER_SIZE) {
|
---|
[1770] | 1021 | errno = rv;
|
---|
[821] | 1022 | } else {
|
---|
| 1023 | skip = 0;
|
---|
| 1024 | do {
|
---|
| 1025 | if (!fgets(line_buff, buflen, f)) {
|
---|
| 1026 | if (feof(f)) {
|
---|
| 1027 | rv = ENOENT;
|
---|
| 1028 | }
|
---|
| 1029 | break;
|
---|
| 1030 | }
|
---|
| 1031 |
|
---|
| 1032 | line_len = strlen(line_buff) - 1; /* strlen() must be > 0. */
|
---|
| 1033 | if (line_buff[line_len] == '\n') {
|
---|
| 1034 | line_buff[line_len] = 0;
|
---|
| 1035 | } else if (line_len + 2 == buflen) { /* line too long */
|
---|
| 1036 | ++skip;
|
---|
| 1037 | continue;
|
---|
| 1038 | }
|
---|
| 1039 |
|
---|
| 1040 | if (skip) {
|
---|
| 1041 | --skip;
|
---|
| 1042 | continue;
|
---|
| 1043 | }
|
---|
| 1044 |
|
---|
| 1045 | /* NOTE: glibc difference - glibc strips leading whitespace from
|
---|
| 1046 | * records. We do not allow leading whitespace. */
|
---|
| 1047 |
|
---|
| 1048 | /* Skip empty lines, comment lines, and lines with leading
|
---|
| 1049 | * whitespace. */
|
---|
| 1050 | if (*line_buff && (*line_buff != '#') && !isspace(*line_buff)) {
|
---|
[1770] | 1051 | if (parserfunc == bb__parsegrent) { /* Do evil group hack. */
|
---|
[821] | 1052 | /* The group entry parsing function needs to know where
|
---|
| 1053 | * the end of the buffer is so that it can construct the
|
---|
| 1054 | * group member ptr table. */
|
---|
| 1055 | ((struct group *) data)->gr_name = line_buff + buflen;
|
---|
| 1056 | }
|
---|
| 1057 |
|
---|
[1770] | 1058 | if (!parserfunc(data, line_buff)) {
|
---|
[821] | 1059 | rv = 0;
|
---|
| 1060 | break;
|
---|
| 1061 | }
|
---|
| 1062 | }
|
---|
| 1063 | } while (1);
|
---|
| 1064 |
|
---|
| 1065 | }
|
---|
| 1066 |
|
---|
| 1067 | return rv;
|
---|
| 1068 | }
|
---|