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path: root/nis/nss_nisplus/nisplus-parser.c
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Diffstat (limited to 'nis/nss_nisplus/nisplus-parser.c')
-rw-r--r--nis/nss_nisplus/nisplus-parser.c177
1 files changed, 97 insertions, 80 deletions
diff --git a/nis/nss_nisplus/nisplus-parser.c b/nis/nss_nisplus/nisplus-parser.c
index e41751fff2..5ed07d86d9 100644
--- a/nis/nss_nisplus/nisplus-parser.c
+++ b/nis/nss_nisplus/nisplus-parser.c
@@ -25,24 +25,17 @@
#include "nisplus-parser.h"
-#define NISENTRYVAL(idx,col,res) \
- (NIS_RES_OBJECT (res)[(idx)].EN_data.en_cols.en_cols_val[(col)].ec_value.ec_value_val)
+#define NISENTRYVAL(idx, col, res) \
+ (NIS_RES_OBJECT (res)[idx].EN_data.en_cols.en_cols_val[col].ec_value.ec_value_val)
-#define NISENTRYLEN(idx,col,res) \
- (NIS_RES_OBJECT (res)[(idx)].EN_data.en_cols.en_cols_val[(col)].ec_value.ec_value_len)
+#define NISENTRYLEN(idx, col, res) \
+ (NIS_RES_OBJECT (res)[idx].EN_data.en_cols.en_cols_val[col].ec_value.ec_value_len)
int
-_nss_nisplus_parse_pwent (nis_result *result, struct passwd *pw,
- char *buffer, size_t buflen, int *errnop)
+_nss_nisplus_parse_pwent_chk (nis_result *result, struct passwd *pw,
+ char *buffer, size_t buflen, int *errnop)
{
- char *first_unused = buffer;
- size_t room_left = buflen;
- size_t len;
-
- if (result == NULL)
- return 0;
-
if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS)
|| NIS_RES_NUMOBJ (result) != 1
|| __type_of (NIS_RES_OBJECT (result)) != NIS_ENTRY_OBJ
@@ -50,7 +43,19 @@ _nss_nisplus_parse_pwent (nis_result *result, struct passwd *pw,
|| NIS_RES_OBJECT (result)->EN_data.en_cols.en_cols_len < 7)
return 0;
- if (NISENTRYLEN (0, 0, result) >= room_left)
+ return _nss_nisplus_parse_pwent (result, 0, pw, buffer, buflen, errnop);
+}
+
+
+int
+_nss_nisplus_parse_pwent (nis_result *result, size_t entry, struct passwd *pw,
+ char *buffer, size_t buflen, int *errnop)
+{
+ char *first_unused = buffer;
+ size_t room_left = buflen;
+ size_t len;
+
+ if (NISENTRYLEN (entry, 0, result) >= room_left)
{
/* The line is too long for our buffer. */
no_more_room:
@@ -58,85 +63,94 @@ _nss_nisplus_parse_pwent (nis_result *result, struct passwd *pw,
return -1;
}
- strncpy (first_unused, NISENTRYVAL (0, 0, result),
- NISENTRYLEN (0, 0, result));
- first_unused[NISENTRYLEN (0, 0, result)] = '\0';
+ strncpy (first_unused, NISENTRYVAL (entry, 0, result),
+ NISENTRYLEN (entry, 0, result));
+ first_unused[NISENTRYLEN (entry, 0, result)] = '\0';
len = strlen (first_unused);
if (len == 0) /* No name ? Should never happen, database is corrupt */
return 0;
pw->pw_name = first_unused;
- room_left -= (len + 1);
- first_unused += (len + 1);
+ room_left -= len + 1;
+ first_unused += len + 1;
- if (NISENTRYLEN (0, 1, result) >= room_left)
+ if (NISENTRYLEN (entry, 1, result) >= room_left)
goto no_more_room;
- strncpy (first_unused, NISENTRYVAL (0, 1, result),
- NISENTRYLEN (0, 1, result));
- first_unused[NISENTRYLEN (0, 1, result)] = '\0';
+ strncpy (first_unused, NISENTRYVAL (entry, 1, result),
+ NISENTRYLEN (entry, 1, result));
+ first_unused[NISENTRYLEN (entry, 1, result)] = '\0';
pw->pw_passwd = first_unused;
len = strlen (first_unused);
- room_left -= (len + 1);
- first_unused += (len + 1);
+ room_left -= len + 1;
+ first_unused += len + 1;
- if (NISENTRYLEN(0, 2, result) >= room_left)
- goto no_more_room;
+ char *numstr = NISENTRYVAL (entry, 2, result);
+ len = NISENTRYLEN (entry, 2, result);
+ if (len == 0 && numstr[len - 1] != '\0')
+ {
+ if (len >= room_left)
+ goto no_more_room;
- strncpy (first_unused, NISENTRYVAL (0, 2, result),
- NISENTRYLEN (0, 2, result));
- first_unused[NISENTRYLEN (0, 2, result)] = '\0';
- len = strlen (first_unused);
- if (len == 0) /* If we don't have a uid, it's an invalid shadow entry */
+ strncpy (first_unused, numstr, len);
+ first_unused[len] = '\0';
+ numstr = first_unused;
+ }
+ if (numstr[0] == '\0')
+ /* If we don't have a uid, it's an invalid shadow entry. */
return 0;
- pw->pw_uid = strtoul (first_unused, NULL, 10);
+ pw->pw_uid = strtoul (numstr, NULL, 10);
- if (NISENTRYLEN (0, 3, result) >= room_left)
- goto no_more_room;
+ numstr = NISENTRYVAL (entry, 3, result);
+ len = NISENTRYLEN (entry, 3, result);
+ if (len == 0 && numstr[len - 1] != '\0')
+ {
+ if (len >= room_left)
+ goto no_more_room;
- strncpy (first_unused, NISENTRYVAL (0, 3, result),
- NISENTRYLEN (0, 3, result));
- first_unused[NISENTRYLEN (0, 3, result)] = '\0';
- len = strlen (first_unused);
- if (len == 0) /* If we don't have a gid, it's an invalid shadow entry */
+ strncpy (first_unused, numstr, len);
+ first_unused[len] = '\0';
+ numstr = first_unused;
+ }
+ if (numstr[0] == '\0')
+ /* If we don't have a gid, it's an invalid shadow entry. */
return 0;
- pw->pw_gid = strtoul (first_unused, NULL, 10);
+ pw->pw_gid = strtoul (numstr, NULL, 10);
- if (NISENTRYLEN(0, 4, result) >= room_left)
+ if (NISENTRYLEN(entry, 4, result) >= room_left)
goto no_more_room;
- strncpy (first_unused, NISENTRYVAL (0, 4, result),
- NISENTRYLEN (0, 4, result));
- first_unused[NISENTRYLEN (0, 4, result)] = '\0';
+ strncpy (first_unused, NISENTRYVAL (entry, 4, result),
+ NISENTRYLEN (entry, 4, result));
+ first_unused[NISENTRYLEN (entry, 4, result)] = '\0';
pw->pw_gecos = first_unused;
len = strlen (first_unused);
- room_left -= (len + 1);
- first_unused += (len + 1);
+ room_left -= len + 1;
+ first_unused += len + 1;
- if (NISENTRYLEN (0, 5, result) >= room_left)
+ if (NISENTRYLEN (entry, 5, result) >= room_left)
goto no_more_room;
- strncpy (first_unused, NISENTRYVAL (0, 5, result),
- NISENTRYLEN (0, 5, result));
- first_unused[NISENTRYLEN (0, 5, result)] = '\0';
+ strncpy (first_unused, NISENTRYVAL (entry, 5, result),
+ NISENTRYLEN (entry, 5, result));
+ first_unused[NISENTRYLEN (entry, 5, result)] = '\0';
pw->pw_dir = first_unused;
len = strlen (first_unused);
- room_left -= (len + 1);
- first_unused += (len + 1);
+ room_left -= len + 1;
+ first_unused += len + 1;
- if (NISENTRYLEN (0, 6, result) >= room_left)
+ if (NISENTRYLEN (entry, 6, result) >= room_left)
goto no_more_room;
- strncpy (first_unused, NISENTRYVAL (0, 6, result),
- NISENTRYLEN (0, 6, result));
- first_unused[NISENTRYLEN (0, 6, result)] = '\0';
+ strncpy (first_unused, NISENTRYVAL (entry, 6, result),
+ NISENTRYLEN (entry, 6, result));
+ first_unused[NISENTRYLEN (entry, 6, result)] = '\0';
pw->pw_shell = first_unused;
len = strlen (first_unused);
- room_left -= (len + 1);
- first_unused += (len + 1);
+ room_left -= len + 1;
+ first_unused += len + 1;
return 1;
}
-libnss_nisplus_hidden_def (_nss_nisplus_parse_pwent)
int
@@ -174,8 +188,8 @@ _nss_nisplus_parse_grent (nis_result *result, u_long entry, struct group *gr,
if (len == 0) /* group table is corrupt */
return 0;
gr->gr_name = first_unused;
- room_left -= (len + 1);
- first_unused += (len + 1);
+ room_left -= len + 1;
+ first_unused += len + 1;
if (NISENTRYLEN (entry, 1, result) >= room_left)
goto no_more_room;
@@ -185,19 +199,24 @@ _nss_nisplus_parse_grent (nis_result *result, u_long entry, struct group *gr,
first_unused[NISENTRYLEN (entry, 1, result)] = '\0';
gr->gr_passwd = first_unused;
len = strlen (first_unused);
- room_left -= (len + 1);
- first_unused += (len + 1);
+ room_left -= len + 1;
+ first_unused += len + 1;
- if (NISENTRYLEN (entry, 2, result) >= room_left)
- goto no_more_room;
+ char *numstr = NISENTRYVAL (entry, 2, result);
+ len = NISENTRYLEN (entry, 2, result);
+ if (len == 0 && numstr[len - 1] != '\0')
+ {
+ if (len >= room_left)
+ goto no_more_room;
- strncpy (first_unused, NISENTRYVAL (entry, 2, result),
- NISENTRYLEN (entry, 2, result));
- first_unused[NISENTRYLEN (entry, 2, result)] = '\0';
- len = strlen (first_unused);
- if (len == 0) /* We should always have a gid */
+ strncpy (first_unused, numstr, len);
+ first_unused[len] = '\0';
+ numstr = first_unused;
+ }
+ if (numstr[0] == '\0')
+ /* We should always have a gid. */
return 0;
- gr->gr_gid = strtoul (first_unused, NULL, 10);
+ gr->gr_gid = strtoul (numstr, NULL, 10);
if (NISENTRYLEN (entry, 3, result) >= room_left)
goto no_more_room;
@@ -207,8 +226,8 @@ _nss_nisplus_parse_grent (nis_result *result, u_long entry, struct group *gr,
first_unused[NISENTRYLEN (entry, 3, result)] = '\0';
line = first_unused;
len = strlen (line);
- room_left -= (len + 1);
- first_unused += (len + 1);
+ room_left -= len + 1;
+ first_unused += len + 1;
/* Adjust the pointer so it is aligned for
storing pointers. */
size_t adjust = ((__alignof__ (char *)
@@ -255,7 +274,6 @@ _nss_nisplus_parse_grent (nis_result *result, u_long entry, struct group *gr,
return 1;
}
-libnss_nisplus_hidden_def (_nss_nisplus_parse_grent)
int
@@ -291,8 +309,8 @@ _nss_nisplus_parse_spent (nis_result *result, struct spwd *sp,
if (len == 0)
return 0;
sp->sp_namp = first_unused;
- room_left -= (len + 1);
- first_unused += (len + 1);
+ room_left -= len + 1;
+ first_unused += len + 1;
if (NISENTRYLEN (0, 1, result) >= room_left)
goto no_more_room;
@@ -302,8 +320,8 @@ _nss_nisplus_parse_spent (nis_result *result, struct spwd *sp,
first_unused[NISENTRYLEN (0, 1, result)] = '\0';
sp->sp_pwdp = first_unused;
len = strlen (first_unused);
- room_left -= (len + 1);
- first_unused += (len + 1);
+ room_left -= len + 1;
+ first_unused += len + 1;
sp->sp_lstchg = sp->sp_min = sp->sp_max = sp->sp_warn = sp->sp_inact =
sp->sp_expire = -1;
@@ -368,4 +386,3 @@ _nss_nisplus_parse_spent (nis_result *result, struct spwd *sp,
return 1;
}
-libnss_nisplus_hidden_def (_nss_nisplus_parse_spent)
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-20 04:33:27 +0000