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
|
/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@login.dknet.dk> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*
* $Id: ctm_pass2.c,v 1.12 1996/04/29 21:02:30 phk Exp $
*
*/
#include "ctm.h"
#define BADREAD 32
/*---------------------------------------------------------------------------*/
/* Pass2 -- Validate the incoming CTM-file.
*/
int
Pass2(FILE *fd)
{
u_char *p,*q,*md5=0;
MD5_CTX ctx;
int i,j,sep,cnt;
u_char *trash=0,*name=0;
struct CTM_Syntax *sp;
struct stat st;
int ret = 0;
int match = 0;
char md5_1[33];
struct CTM_Filter *filter;
FILE *ed = NULL;
if(Verbose>3)
printf("Pass2 -- Checking if CTM-patch will apply\n");
MD5Init (&ctx);
GETFIELD(p,' '); if(strcmp("CTM_BEGIN",p)) WRONG
GETFIELD(p,' '); if(strcmp(Version,p)) WRONG
GETFIELD(p,' '); if(strcmp(Name,p)) WRONG
/* XXX Lookup name in /etc/ctm,conf, read stuff */
GETFIELD(p,' '); if(strcmp(Nbr,p)) WRONG
/* XXX Verify that this is the next patch to apply */
GETFIELD(p,' '); if(strcmp(TimeStamp,p)) WRONG
GETFIELD(p,'\n'); if(strcmp(Prefix,p)) WRONG
/* XXX drop or use ? */
for(;;) {
Delete(trash);
Delete(name);
Delete(md5);
cnt = -1;
/* if a filter list was specified, check file name against
the filters specified
if no filter was given operate on all files. */
match = (FilterList ?
!(FilterList->Action) : CTM_FILTER_ENABLE);
GETFIELD(p,' ');
if (p[0] != 'C' || p[1] != 'T' || p[2] != 'M') WRONG
if(!strcmp(p+3,"_END"))
break;
for(sp=Syntax;sp->Key;sp++)
if(!strcmp(p+3,sp->Key))
goto found;
WRONG
found:
for(i=0;(j = sp->List[i]);i++) {
if (sp->List[i+1] && (sp->List[i+1] & CTM_F_MASK) != CTM_F_Bytes)
sep = ' ';
else
sep = '\n';
switch (j & CTM_F_MASK) {
case CTM_F_Name:
GETNAMECOPY(name,sep,j,0);
/* If `keep' was specified, we won't remove any files,
so don't check if the file exists */
if (KeepIt &&
(!strcmp(sp->Key,"FR") || !strcmp(sp->Key,"DR"))) {
match = CTM_FILTER_DISABLE;
break;
}
for (filter = FilterList; filter; filter = filter->Next) if (0 == regexec(&filter->CompiledRegex, name,
0, 0, 0)) {
match = filter->Action;
}
if (CTM_FILTER_DISABLE == match)
break; /* should ignore this file */
/* XXX Check DR DM rec's for parent-dir */
if(j & CTM_Q_Name_New) {
/* XXX Check DR FR rec's for item */
if(-1 != stat(name,&st)) {
fprintf(stderr," %s: %s exists.\n",
sp->Key,name);
ret |= Exit_Forcible;
}
break;
}
if(-1 == stat(name,&st)) {
fprintf(stderr," %s: %s doesn't exist.\n",
sp->Key,name);
if (sp->Key[1] == 'R')
ret |= Exit_Forcible;
else
ret |= Exit_NotOK;
break;
}
if (SetTime && getuid() && (getuid() != st.st_uid)) {
fprintf(stderr,
" %s: %s not mine, cannot set time.\n",
sp->Key,name);
ret |= Exit_NotOK;
}
if (j & CTM_Q_Name_Dir) {
if((st.st_mode & S_IFMT) != S_IFDIR) {
fprintf(stderr,
" %s: %s exist, but isn't dir.\n",
sp->Key,name);
ret |= Exit_NotOK;
}
break;
}
if (j & CTM_Q_Name_File) {
if((st.st_mode & S_IFMT) != S_IFREG) {
fprintf(stderr,
" %s: %s exist, but isn't file.\n",
sp->Key,name);
ret |= Exit_NotOK;
}
break;
}
break;
case CTM_F_Uid:
case CTM_F_Gid:
case CTM_F_Mode:
GETFIELD(p,sep);
break;
case CTM_F_MD5:
if(!name) WRONG
if(j & CTM_Q_MD5_Before) {
char *tmp;
GETFIELD(p,sep);
if(match && (st.st_mode & S_IFMT) == S_IFREG &&
(tmp = MD5File(name,md5_1)) != NULL &&
strcmp(tmp,p)) {
fprintf(stderr," %s: %s md5 mismatch.\n",
sp->Key,name);
if(j & CTM_Q_MD5_Force) {
if(Force)
fprintf(stderr," Can and will force.\n");
else
fprintf(stderr," Could have forced.\n");
ret |= Exit_Forcible;
} else {
ret |= Exit_NotOK;
}
}
break;
}
if(j & CTM_Q_MD5_After) {
GETFIELDCOPY(md5,sep);
break;
}
/* Unqualified MD5 */
WRONG
break;
case CTM_F_Count:
GETBYTECNT(cnt,sep);
break;
case CTM_F_Bytes:
if(cnt < 0) WRONG
GETDATA(trash,cnt);
if (!match)
break;
if(!strcmp(sp->Key,"FN")) {
p = tempnam(TmpDir,"CTMclient");
j = ctm_edit(trash,cnt,name,p);
if(j) {
fprintf(stderr," %s: %s edit returned %d.\n",
sp->Key,name,j);
ret |= j;
unlink(p);
Free(p);
return ret;
} else if(strcmp(md5,MD5File(p,md5_1))) {
fprintf(stderr," %s: %s edit fails.\n",
sp->Key,name);
ret |= Exit_Mess;
unlink(p);
Free(p);
return ret;
}
unlink(p);
Free(p);
} else if (!strcmp(sp->Key,"FE")) {
p = tempnam(TmpDir,"CTMclient");
ed = popen("ed","w");
if (!ed) {
WRONG
}
fprintf(ed,"e %s\n", name);
if (cnt != fwrite(trash,1,cnt,ed)) {
perror(name);
pclose(ed);
WRONG
}
fprintf(ed,"w %s\n",p);
if (pclose(ed)) {
perror(p);
WRONG
}
if(strcmp(md5,MD5File(p,md5_1))) {
fprintf(stderr,"%s %s MD5 didn't come out right\n",
sp->Key, name);
WRONG
}
unlink(p);
Free(p);
}
break;
default: WRONG
}
}
}
Delete(trash);
Delete(name);
Delete(md5);
q = MD5End (&ctx,md5_1);
GETFIELD(p,'\n'); /* <MD5> */
if(strcmp(q,p)) WRONG
if (-1 != getc(fd)) WRONG
return ret;
}
|
