1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
|
--- a/modules/pam_unix/yppasswd_xdr.c
+++ b/modules/pam_unix/yppasswd_xdr.c
@@ -21,6 +21,268 @@
#endif
#include "yppasswd.h"
+#ifdef __UCLIBC__
+
+static const char xdr_zero[BYTES_PER_XDR_UNIT] = {0, 0, 0, 0};
+
+/*
+ * XDR integers
+ */
+bool_t
+xdr_int (XDR *xdrs, int *ip)
+{
+
+#if INT_MAX < LONG_MAX
+ long l;
+
+ switch (xdrs->x_op)
+ {
+ case XDR_ENCODE:
+ l = (long) *ip;
+ return XDR_PUTLONG (xdrs, &l);
+
+ case XDR_DECODE:
+ if (!XDR_GETLONG (xdrs, &l))
+ {
+ return FALSE;
+ }
+ *ip = (int) l;
+ case XDR_FREE:
+ return TRUE;
+ }
+ return FALSE;
+#elif INT_MAX == LONG_MAX
+ return xdr_long (xdrs, (long *) ip);
+#elif INT_MAX == SHRT_MAX
+ return xdr_short (xdrs, (short *) ip);
+#else
+#error unexpected integer sizes in xdr_int()
+#endif
+}
+
+/*
+ * XDR null terminated ASCII strings
+ * xdr_string deals with "C strings" - arrays of bytes that are
+ * terminated by a NULL character. The parameter cpp references a
+ * pointer to storage; If the pointer is null, then the necessary
+ * storage is allocated. The last parameter is the max allowed length
+ * of the string as specified by a protocol.
+ */
+bool_t
+xdr_string (XDR *xdrs, char **cpp, u_int maxsize)
+{
+ char *sp = *cpp; /* sp is the actual string pointer */
+ u_int size;
+ u_int nodesize;
+
+ /*
+ * first deal with the length since xdr strings are counted-strings
+ */
+ switch (xdrs->x_op)
+ {
+ case XDR_FREE:
+ if (sp == NULL)
+ {
+ return TRUE; /* already free */
+ }
+ /* fall through... */
+ case XDR_ENCODE:
+ if (sp == NULL)
+ return FALSE;
+ size = strlen (sp);
+ break;
+ case XDR_DECODE:
+ break;
+ }
+ if (!xdr_u_int (xdrs, &size))
+ {
+ return FALSE;
+ }
+ if (size > maxsize)
+ {
+ return FALSE;
+ }
+ nodesize = size + 1;
+
+ /*
+ * now deal with the actual bytes
+ */
+ switch (xdrs->x_op)
+ {
+ case XDR_DECODE:
+ if (nodesize == 0)
+ {
+ return TRUE;
+ }
+ if (sp == NULL)
+ *cpp = sp = (char *) mem_alloc (nodesize);
+ if (sp == NULL)
+ {
+#ifdef USE_IN_LIBIO
+ if (_IO_fwide (stderr, 0) > 0)
+ (void) fwprintf (stderr, L"%s",
+ _("xdr_string: out of memory\n"));
+ else
+#endif
+ (void) fputs (_("xdr_string: out of memory\n"), stderr);
+ return FALSE;
+ }
+ sp[size] = 0;
+ /* fall into ... */
+
+ case XDR_ENCODE:
+ return xdr_opaque (xdrs, sp, size);
+
+ case XDR_FREE:
+ mem_free (sp, nodesize);
+ *cpp = NULL;
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/*
+ * XDR long integers
+ * The definition of xdr_long() is kept for backward
+ * compatibility. Instead xdr_int() should be used.
+ */
+bool_t
+xdr_long (XDR *xdrs, long *lp)
+{
+ if (xdrs->x_op == XDR_ENCODE
+ && (sizeof (int32_t) == sizeof (long)
+ || (int32_t) *lp == *lp))
+ return XDR_PUTLONG (xdrs, lp);
+
+ if (xdrs->x_op == XDR_DECODE)
+ return XDR_GETLONG (xdrs, lp);
+
+ if (xdrs->x_op == XDR_FREE)
+ return TRUE;
+
+ return FALSE;
+}
+
+/*
+ * XDR unsigned integers
+ */
+bool_t
+xdr_u_int (XDR *xdrs, u_int *up)
+{
+#if UINT_MAX < ULONG_MAX
+ u_long l;
+
+ switch (xdrs->x_op)
+ {
+ case XDR_ENCODE:
+ l = (u_long) * up;
+ return XDR_PUTLONG (xdrs, (long *) &l);
+
+ case XDR_DECODE:
+ if (!XDR_GETLONG (xdrs, (long *) &l))
+ {
+ return FALSE;
+ }
+ *up = (u_int) l;
+ case XDR_FREE:
+ return TRUE;
+ }
+ return FALSE;
+#elif UINT_MAX == ULONG_MAX
+ return xdr_u_long (xdrs, (u_long *) up);
+#elif UINT_MAX == USHRT_MAX
+ return xdr_short (xdrs, (short *) up);
+#else
+#error unexpected integer sizes in xdr_u_int()
+#endif
+}
+
+/*
+ * XDR opaque data
+ * Allows the specification of a fixed size sequence of opaque bytes.
+ * cp points to the opaque object and cnt gives the byte length.
+ */
+bool_t
+xdr_opaque (XDR *xdrs, caddr_t cp, u_int cnt)
+{
+ u_int rndup;
+ static char crud[BYTES_PER_XDR_UNIT];
+
+ /*
+ * if no data we are done
+ */
+ if (cnt == 0)
+ return TRUE;
+
+ /*
+ * round byte count to full xdr units
+ */
+ rndup = cnt % BYTES_PER_XDR_UNIT;
+ if (rndup > 0)
+ rndup = BYTES_PER_XDR_UNIT - rndup;
+
+ switch (xdrs->x_op)
+ {
+ case XDR_DECODE:
+ if (!XDR_GETBYTES (xdrs, cp, cnt))
+ {
+ return FALSE;
+ }
+ if (rndup == 0)
+ return TRUE;
+ return XDR_GETBYTES (xdrs, (caddr_t)crud, rndup);
+
+ case XDR_ENCODE:
+ if (!XDR_PUTBYTES (xdrs, cp, cnt))
+ {
+ return FALSE;
+ }
+ if (rndup == 0)
+ return TRUE;
+ return XDR_PUTBYTES (xdrs, xdr_zero, rndup);
+
+ case XDR_FREE:
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/*
+ * XDR unsigned long integers
+ * The definition of xdr_u_long() is kept for backward
+ * compatibility. Instead xdr_u_int() should be used.
+ */
+bool_t
+xdr_u_long (XDR *xdrs, u_long *ulp)
+{
+ switch (xdrs->x_op)
+ {
+ case XDR_DECODE:
+ {
+ long int tmp;
+
+ if (XDR_GETLONG (xdrs, &tmp) == FALSE)
+ return FALSE;
+
+ *ulp = (uint32_t) tmp;
+ return TRUE;
+ }
+
+ case XDR_ENCODE:
+ if (sizeof (uint32_t) != sizeof (u_long)
+ && (uint32_t) *ulp != *ulp)
+ return FALSE;
+
+ return XDR_PUTLONG (xdrs, (long *) ulp);
+
+ case XDR_FREE:
+ return TRUE;
+ }
+ return FALSE;
+}
+
+#endif /* UCLIBC */
+
bool_t
xdr_xpasswd(XDR * xdrs, xpasswd * objp)
{
|